Review: Bontrager R3 Hard-Case Lite TLR Road Tire

by Jeff Whitfield on | 24 Comments


Bontrager R3 mounted on DT Swiss rim
Bontrager R3 mounted on DT Swiss rim

Last November, I purchased a set of Bontrager R3 Hard-Case Lite TRL road tires, opting for the dark brown sidewall version. At the time, reviews were pretty sparse so it was a bit of a leap of faith in going with this tire. Now that I’ve ridden on them for a number of months, it’s time to report on what happened with these tires. Straight-up, while there are some very good things to say about these tires, there's also some bad things.

Why I Chose The Bontrager R3 Tires

The main reason for the upgrade was so that I could switch to a tubeless setup for my road tires. I purchased a relatively inexpensive set of tubeless rims around the same time to accomplish that. On top of that, I also wanted a tire that provided more comfort and better tread while still being relatively fast.

My prior road wheelset was clincher-only running on a set of Continental Grand Prix 5000 tires, which I found to be slicker than snot and rather stiff. They weren’t particularly supple and, regardless of the tire pressure, I could feel pretty much every bump in the road. After a nasty little spill on them, I decided not to ride on them anymore. Instead, they became a dedicated wheelset for indoor training.

Being that I was no longer compelled to ride on slicks, I went with the R3 mainly due to the light tread on them. I darn near went with the Specialized Roubaix Pro which is very similar to the Bontrager R3. Comparing the two, I had a hard time understanding the difference. The width on the Roubaix Pro wasn’t clear. Was it 30mm or 32mm? With a max psi of 90 compared to the 70 psi of the R3, you’d think the R3 would be wider. My guess is that the Roubaix Pro is a 30mm tire with a true width of 32mm when inflated to max pressures.

In the end, the R3 seemed to be a more supple tire thanks to its 32mm width. When inflated to its max psi, it’s actually closer to 34mm, making it a more comfy tire for sure.

So, out with the GP 5000’s and in with the R3’s!

How Easy Is It To Install The R3 Tires?

Installing the Bontrager R3’s was relatively easy. They’re a little tight but, with a little work, I can slip them onto the rims without using any tools. Getting them seated is relatively easy too. Provided that I prep the beads well, a good blast from my tire setter does the trick. After that, pump a few ounces of sealant and off I go!

How Do The R3 Tires Ride?

So, how do they feel on the road? Quite well, actually. Compared to the GP 5000’s, they’re noticeably softer and hug the ground better. The light tread definitely gives me greater confidence when riding on otherwise sketchy road conditions. In fact, the tread is good enough to even hit light gravel roads.

I started off riding at 70 psi but slowly reduced the pressure to around 65 psi in the back and 62 psi in the front. Once I did that, the R3’s immediately revealed their suppleness. I could actually feel the tire giving a little bit in the turns. Rides felt relatively smooth with decent dampening of road vibrations.

Even with the suppleness, they still felt relatively fast. Rolling resistance felt pretty good actually. Granted, the GP 5000 was a faster tire...but it’s a pure slick, not to mention a stiffer tire. Regardless, the R3 still rolls pretty fast even at lower tire pressures.

How Resistant Are The R3 Tires To Punctures?

Being that these are pretty light tires, I didn’t expect them to be super resilient to punctures. They’re rated at 120 TPI which is pretty good. However, even with Bontrager’s claim of the Hard-Case Lite puncture protection, I still managed to get a good puncture in the rear tire.

This was actually my first puncture of a tubeless tire. Somehow I ran over a nail or something. Darn thing was stuck in there with a small metal piece sticking out. I heard a “tink-tink” noise, stopped, and inspected the tire to find that, yes, there was a nail in there. I couldn’t pull it out so I waited and rode home so I could pull it out later. However, within a block from my house, I heard a “SPEW” coming from my back tire. Seems the nail finally went through. Fortunately, the sealant managed to seal up the hole but still kept the tire inflated enough so that I could get home. Amazing how tubeless tires work!

Are There Any Flaws With The R3 Tires?

So, at this point, you would assume that I like the Bontrager R3 tires, right? Not so fast! Now is the part of the review where I add a very, very big “BUT” in the review. I like the Bontrager R3 and I really wanted to continue liking it...BUT, a few problems with the tires occurred recently that changed my mind about them.

I was getting pretty used to the R3’s and was content to keep riding on them till I wore them out. However, during a recent ride, I noticed that my back tire kept going low less than an hour of riding. My first thought was that it was due to the nail puncture that happened weeks before. The thing is, if that was the case, then I would have seen sealant leaking from the hole itself. Plus, the back tire had plenty of fresh sealant in it, no more than a few weeks old. So, no, something else was happening.

I had pumped the back and front tires to 66 and 64 psi respectively. After 45 minutes, I stopped and checked the pressure. The back was down to 62 psi with the front down to about 59 psi. I pumped both back up and continued riding. After another 45 minutes, I checked again and, like before, both tires were significantly lower, worse actually. Definitely had to cut my ride short and get back home.

After getting back home, I cleaned up my bike and set aside the wheels so I could test the tires. I filled up my sink with some soapy water and dipped each tire in, rotating them slowly, so I could see where the leaks were occurring.

What I found blew my mind. The front wheel revealed some sweating through the sidewalls in certain parts. In fact, you can see it clearly in the video below:

If you look closely, you can even see some air bubbles coming up from the other side as well. My initial thought was that I needed to just replace the sealant but, after testing the rear wheel, that theory quickly changed.

The rear wheel was actually worse. Initially, I thought it was just the stem, since it had a bit of a leak as well. But, after rotating the wheel, I noticed similar sweating but worse. The rear wheel was sweating like a race horse! Check it out:

So, what is happening here? Well, based on my research, it’s actually normal for a tubeless tire to leak a bit through the sidewalls, especially if it’s a tire with a relatively thin sidewall. Since tires are made from threaded casings, those threads tend to fracture a bit on the sidewalls, which is why it’s common to see some sealant leaks on the sidewalls. However, the sealant is supposed to fill up these leaks. It’s not uncommon to lose 1-2 psi of pressure within a few days or even a week.

But that’s not what’s happening here. I’m losing 1-2 psi every 30 minutes! And it’s not like these tires are brand new. I’ve ridden a number of rides on them over the past few months so you’d think they’re be well broken-in. Clearly, there’s some sort of defect with these tires that is causing severe sweating of air near the edge of the rim. Worse, the sealant isn’t filling these leaks like it’s supposed to.

My theory is that once the tire is broken in a little the threads between the main part of the sidewall and the bead start to tear a bit. In fact, if you look at the picture below, you can see that there’s a textured part that runs between the smooth part of the sidewall right up to the end of the bead:

Close-up of Bontrager R3 sidewall
Close-up of Bontrager R3 sidewall

That’s the part of the tire with a serious design flaw. That one part of the casing doesn’t appear to be designed to allow the sealant to get there. As such, when the tears happen, air can get out resulting in a slow leak of each tire.

Now, some have advised online to simply try a different sealant. I use Stan’s NoTubes sealant and, while I could try Orange sealant or the like, I’m not going to even try. Why? Because in my opinion I shouldn’t have to. A well designed tubeless tire should work reasonably well with the most common brands of sealant. I shouldn’t have to use a specific brand of sealant in order to use these tires.

It could very well be that they just don’t work well for the rims I’m using. I ran them on a set of DT Swiss R 500 rims which, to me, are pretty standard rims. I don’t see any reason why they wouldn’t work. Besides, where it’s leaking at isn’t really even part of the bead, which has me really confused. I could very well simply have a defective set. But the way it’s happening has me suspecting it’s more of a flaw in the design of the tire.

Warranty Return And The Switch To A New Tire

In the end, I found the Bontrager R3’s to be defective in design. As much as I like the performance of these tires, the fact that they leaked so badly off the sidewalls near the bead makes them impossible to use. Again, I may have been issued a defective set but, honestly, I’m not sure if I even want to find that out. My confidence in these tires is broken. Bontrager would have an uphill battle in convincing me to try their tires again. I just don’t like the idea of having a set of tires fail on me during a big ride. Fortunately, that didn’t happen with these. I discovered the problem early on and am now working to remedy the problem.

So, what am I doing to solve this? Well, I'm switching tires and going with a different brand. I’m now in the market for another road tire. Bummer. Fortunately, thanks to Bontrager's warranty, my local bike show agreed to give me in-store credit. They didn't have the tire I wanted so I had to order it online. In time, I'll reveal what tire I went with. But first I gotta get them and ride on them a bit before posting a review.

So, should you go with a Bontrager R3 tire? Well, yes and no. If the problem I had was just a defect or has been solved with current productions of the tires then, yes, I would recommend the R3. If not, no, I would stay away from them and look elsewhere.

Post a comment!


I bought a nice Domane SL6 few months ago. After 2,000 km. I got blisters on both tires (Bontrager R3, 32mm.) It looks like the external layer of the tire is separating from the middle one. I am going back to the shop to see what they have to say. It is my first try on tubeless tires and I am really not impressed. Ride is good but not the problems coming with it.


Don't get discouraged by your first experience with tubeless. Personally, I wasn't impressed with the performance of the Bontrager R3. And it looks like you too had a less that stellar experience. There are plenty of other tire options out there. I would suggest looking into another option. Try a Continental tubeless or the like. If you're doing a lot of road riding and want a good slick tire then the Grand Prix 5000 is a pretty solid option and likely to hold up better than the Bontrager.


I have these 32mm black/tan on my Trek Domane Sl6. 1200miles and the back tyre is shot..... The slick middle rubber has started to blister and peel. Just not good enough imo. I have a set of 32mm Continental Gp5000 S coming. I usually run Pirelli P-Zero Race TLR on my other bikes but couldn't get a 32mm Version for the Trek. By the way the front tyre is in perfect condition and still.has ridge in middle


I’m running a 28mm R3 on my rear aeolus carbon rim and while it doesn’t leak like yours did, I’ve had my own sidewall issues.

The R3 replaced an AWS3 (the all weather version of the tire) after the sidewall straight up failed during a ride. This was after less than 1500 miles at 85 psi. I’ve never had a sidewall problem in years of running contis, but the new gp5000 tubeless won’t fit on my rim.

I swapped the aws3 with an r3 and got a sidewall cut in less than a week. The cut was obvious on the outside but barely went through to the inside of the tire (invisible puncture). It never sealed on its own. There’s definitely something up with the sidewall on these tires.


I read somewhere that the 32mm versions are built differently than the 28mm versions. The problem seems to be down to the thread count of the tire itself. A 28mm version uses a tighter thread count, which makes sense since a 28mm tire doesn't have to be as supple as a 32mm. Honestly, I think that's the key to why the 32mm is so different.



I use the Bontrager R3 28mm(non tubeless) and I can't fault them so far. Having used tubeless tyres before from several brands, I came to the conclusion that tubeless ready tyres simply didn't work for my wheelset(Mavic Krysium Elite) and the only tyre which I found sealed well if cut, or didn't leak air or sealant a lot when left was a pair of IRC RBCC Tubeless only tyres which I really loved.

They are hard to find in places, but after using them all the previous Hutchinson, Mavic, Bontrager tubeless tyres etc were just crap in comparison for both longevity and ability to seal with sealant.


Yeah, I have found that many problems that people have with certain tires can be attributed to the wheels they're using. Not all tires and wheel combinations work. Issue boils down to a lack of standards, which exist but aren't always consistent.


My R3 tubeless rear tyre has just blistered after only 2,500Km. Must have split internally but luckily not burst, just a 30mm egg shaped dome on the running surface, not the sidewall. I’ve never seen this happen before and it’s quite a risky way to fail, just glad I noticed the bump in the ride each wheel turn.


Gah, that sounds like it would be a royal pain in the ass if that tire failed! :P


I don’t think you were using tubeless tires. Pretty sure TLR doesn’t stand for tubeless ready on those tires. I forget what it stands for, but the tubeless versions have a “TR” designation and clearly say tubeless on the tires itself.


Nope. The TLR's are tubeless as well. I probably got a bad set is all.


Pretty cool lookin Van Halen bike you got there. Cheers


Thx man! Appreciate it! :D


I've noticed the same thing with Vittoria tyres and think it's the trade off of having a tubeless road tyre that is still supple. When you mount the tyres and fill with sealant initially - over fill them (extra sealant) and then leave overnight on their side on a bucket or something to keep the sealant on the side wall. Do this for each side. I had to do this for my Vittoria Corsas before they stopped leaking constantly. They still leak but more like a normal tyre - about 10-20psi a week or so. Before that was every ride


That's a damn good tip! I'll have to try that with a current Rene Herse tire that has a bit of a slow leak. I think it's actually a valve issue but will look at it possibly being a side wall issue.

That said, I'm not entirely sure the issue I had would have been solved by doing the side soak thing. I ran these tires for months and topped off the sealant quite a bit. It's possible that, like the Vittoria tyres you used, they're just super finnicky and needs more love. :P


I wonder if you were running the wrong R3s? I don't mean to insult your intelligence or suggest anything like that... Just that the R3 is 120tpi like you mentioned but the R3 TLR version is 170tpi. So... I just thought maybe you accidently used the ones that were not TLR?


Heck, no, you're not insulting my intelligence! That's a very valid point and somethign worth considering. The funny thing when looking at the specs for these tires is that the 32mm version that I used is indeed different than the other two sizes for this tire. The 25mm and 28mm versions do indeed have 170tpi. But the 35mm specifically has 120tpi. Based on that, I would imagine that the problem likely has more to do with differences in the 32mm version versues the 25mm and 28mm versions. That TPI difference is probably the key to the problems I had with the tires, which is odd since from my understanding a lower TPI tire should be more durable.


I will only run Orange seal for road, gravel, mtn and fat. Stans ruined too many of my tires. The ammonia in Stan’s is corrosive and will eventually break down your tires from the inside out!


Based on what I've read, my understanding is that virtually all sealants that use natural latex have trace ammounts of ammonia. Unless the sealant uses synthetic latex, a really small amount of ammonia is going to be present due to how the latex is made. Its much less of a problem for tires and more of a problem with alloy rims. Older formulas of Stan's had higher concentrations of ammonia which led to some ally rims to degrade, especially at the stem area. Apparently, Stan's has since updated their formula to have far less ammonia which makes it unlikely to be an issue anymore.

That said, does Orange have trace ammounts of ammonia as well? Honestly, I don't know. I have yet to find any info on what kind of latex they use and whether it's natural or synthetic. Regardless, I found Orange Endurance to glob up rather heavily on me. Maybe it's due to the Texas weather and I need to use Orange Standard.


I have these same tires, 32 bought them in Oct 2020 and have not had any issues with air leak. I generally ride at 60 psi and after a week, pressure is 57\58 psi. I am wondering if the ones you had were from a bad run. With my current experiences with these tires, I would buy again, and I have almost 800 miles on them at this point and the center ridge line is still present. I have been really happy with them.


You know, that's quite possible. Could have just been a bad run. Honestly, like you, I really liked the tire. Even used them on a ride that wasn't even offroad. Just seems really odd for them to go south after just six months of riding. I'm not sure what to make of that. Only conclusion I could come up with was one of quality control. Just not 100% convinced that Bontrager is maintaining the quality of their tires. Could be wrong though.


Might not have bought these had I read this first, bout to try a set out. Thanks for the write up!


I know the feeling. Several products that has happened with me...and not just bike stuff! :P


I've been looking for reviews on this tire and found this. Very well written review. Thanks for taking the time to report what you found!