Bontrager XR4 Expert Tire

Light and fast rolling. Designed to out-corner any other tire on the market. Engineered for XC and Trail riders in loose and rocky conditions. Covered by Bontrager's Unconditional Performance Guarantee. Available in 2.20 or 2.35, aramid bead, 60 TPI.

User Reviews (10)

Showing 1-10 of 10  
Osco   [Dec 20, 2015]
Strength:

Predictable traction I can count on when I need It the most.

Weakness:

Wet Roots but hey, It's wet roots polished by many tires.

I ride in lots of soft stuff, leaves,(Wet Leaves we call Brown Ice), rocks, roots, sugar sand and some gravel now and then. Take the XR-4 Into a fast corner you need to lean Into the side knobs with authority. The Harder you push this tire the more it bites down.
The XR-4 Expert TLR 27.5x2.35 lets me try all available lines with super confidence as long as I do things right. When I make a mistake with the bike this tire really helps me stay on the bike. If I come In too hot and braking is not an option I drop my chin down towards the stem, pitch the bike way over and trust the XR-4 on the front.
I did have XR-3's at both ends and putting the XR-4 up front did not as far as I can tell increase rolling resistance. I think the ramped center knobs do the trick.
I weighed mine at 820 grams, the XR-3 was 720 grams. I do not notice the extra grams up front at all.
When my back XR-3 2.35 wears out I will change to the 2.25 wide XR-3 in the rear.
I see no need to try tires costing nearly twice as much that I already found out I wear them out twice as fast and get nothing more In traction or control.

Similar Products Used: Rocket Ron's, Knobby Nicks,
OVERALL
RATING
5
VALUE
RATING
5
R3d D3f   Weekend Warrior [Oct 18, 2014]
Strength:

Yes great cornering grip and traction, reasonable price, solid knobbies with a good thread design that doesn't get clogged with mud too fast.

Weakness:

Weak sidewalls, they started to crack after a year of average use, the rear just went out.

I take care of my bikes and have never had a (rear) tire go out so fast. It's a shame because I love the profile/thread but the sidewalls are too weak. I'd rather change a tire because of a worn out thread (softer compound) but I guess it's a personal choice. This tire grips well, corner great and gives plenty of traction. I would recommend this tire in the front but I feel it's too weak in the rear. Also the Bontrager Guarantee is only for the 30 first days of use so pretty much useless for riders like me.

Similar Products Used: Maxxis Minion, Bontrager, Kenda etc...
OVERALL
RATING
3
VALUE
RATING
3
Vuco   All Mountain Rider [Jan 12, 2014]
Strength:

Great traction and cornering, great all round tire in all but the worst muddy conditions
Light for such wide and high volume tire (760g, 26x2.35")

Weakness:

thin sidewalls which I didn't tear on the rocks. but were prone to "snake bites" even on high pressures on the rear (both 2.35" and 2.2")

Got these on my Slash. They were very good tires, really good rear traction, good rolling, wide to specs (real 2.2" and 2.35"). My first good tire (before I had perfomance version tires from Schwalbe, Conti and others).

Rode them with tubes, 1.9bar fron, 2.3bar rear. Great front braking traction and cornering, great on wet, rocks and roots. After 5 very hard rides on the rocky trails, rear tires started to show some wear. Front still looks like new after 1000km on all sorts of terrain.

Used them on Bontrager Rhythm Comp wheelset. Easily put on by hands. Couldn't make them tubeless tho, but didn't try hard cause later on I bought the tape and Team Issue model for tubeless.

Only negative thing is that the same weight Schwalbe Hans Dampf 2.35 (Trailstar and Pacestar) have a lot thicker sidewalls and are wider. Didn't tear the tire, but got a lot of snakebites on the rear when the terrain was rocky and fast. Even on high pressures (2.5-2.7bar for a 85kg rider on 160mm travel bike).

Similar Products Used: Bontrager XR4 2.35" Team Issue TLR tire
All sort of cheap heavy performance tires from Schwalbe, Conti, WTB
OVERALL
RATING
4
VALUE
RATING
4
ragetty   All Mountain Rider [Jun 10, 2013]
Strength:

light, fast rolling, excellent grip on rock/woodland floor/fire roads/moist mud/etc., robust & difficult to pinch flat (for an AM tyre), price

Weakness:

when used for their design purpose, none yet seen ...

i don't normally write reviews, as opinions are so subjective, but these tyres are worth the comment. i have been using these for harder duty tasks than their design purpose and they have been great - i have thrown the complete gamut of alpine AM conditions at this tyre and it has performed flawlessly (one pinch flat on a high-speed baby-head trail, and really no surprise). i can only completely agree with the comments of my predecessors here - in terms of grip and hardiness, this tyre is a real multi-talent, an excellent jack-of-all-trades. i shall be trying bonti's more robust version on my enduro bike.

Similar Products Used: maxxis arrdent, schwalbe big betty, onza ibex, conti rubber queen
OVERALL
RATING
5
VALUE
RATING
5
Vhom   Weekend Warrior [Nov 19, 2012]
Strength:

Grip, fast rolling, cornering and price.

Weakness:

Weight. But you can spend 15 bucks more to save 50 grams.

I got these to replace my MK2. I got about four rides on them and these are amazing. Let me say that these have the best of Kenda Nevegal and Maxxis Minions with the Conti Trail Kings rolling resistance into one tire. I'm so eager to wear this out so I can try Team version. Let's say, I'm more than impress. Was going to try Schwalbes Hans Damp, but at 70-90 a pop, I'll pass.

Similar Products Used: Kendas, Maxxis and many other tires.
OVERALL
RATING
5
VALUE
RATING
5
Lanvillas   [Oct 25, 2012]
Strength:

INSANELY good cornering, huge, roll like mad once they're moving, eat almost everything that comes in their path!

Weakness:

No way! (Just don't think it is going to roll like a slick of course!)

These are AMAZING tires. Biggest strength CORNERING. It is like it floats through the corners at full speed no questions asked. If your friend has these on their bike ask to borrow it and take a super tight turn just so you can have the experience. Of course, every tire has its purpose...This tire is aggressive so don't use it if you want absolute minimum roll resistance. This tire is meant for almost the most aggressive of terrains, and that's what it does. I have full confidence in this tire, which is good if you are on rough terrain. I have tried to really push its limits and it has passed every test.

I actually enjoy using it to commute when there are thousands of leaves on the ground mixed with tons of water (since it rains a lot here). There is a corner on my commute that is a mix of several sewer covers, leaves, water and potholes and my bike would always slip out a little bit with other tires; I took about an 80 degree turn across it with these tires for the first time and just started laughing because it was NP for these beasts.

I have the 2.20 size. I'm glad I didn't go with the bigger size because they are a MASSIVE 2.20! (About 1/4 of an inch bigger than my 2.1 WTB Moto Raptors, which I also loved before they wore out).

OVERALL
RATING
5
VALUE
RATING
5
Britishnate   [Jun 01, 2012]
Strength:

Fast Rolling, Grippy and easy to install

Weakness:

None that I have found yet.

I am running these as they came on my Fuel Ex8. I used to have the 2011 version of these tires and the new 2012 model are much better. They roll faster, they are lighter and seem to have better traction than their predecessor. I am running these Tubless even though they state they are not and they work great. If you tried last years version and were not impressed I strongly suggest you give the new ones a try, you will not be disappointed.

OVERALL
RATING
5
VALUE
RATING
4
cb3kd   All Mountain Rider [May 31, 2012]
Strength:

Corners very well, fast rolling, seems to wear well so far.

Weakness:

Breaking.

These tires came on my newly purchased Remedy 8. After reading reviews on last years tires, I thought I would be giving these to a friend. However this years tire got better reviews, so I kept them on to give them a try. I have been really surprised!! The rear tire corners better than any tire I've had in a while. The only flaw I have found so far is under breaking, but the knobs are fairly short for speed reasons I would imagine. Other than that I couldn't be happier, and would purchase this tire again.
The front has not been as good, lacking stability under high speed corners. I am still getting my set-up on the bike dialed in, but I have tried different air pressures and haven't found the confidence that I have in the rear tire. To the rear tires credit, it doesn't seem to matter if it has too much or too little air. I haven't tried to go tubeless yet on these tires, they have been very durable with no flats after 9 rides on nor-cal sharp rocks.
Overall I have been very impressed, especially for the price range. Seems like Bontrager's focus on a better product has paid off.

Similar Products Used: Kenda Nevegals, WTB-Bronson, Specialized Captain
OVERALL
RATING
4
VALUE
RATING
4
mtbcville   Cross Country Rider [May 30, 2012]
Strength:

Excellent cornering! And shreds through mud. Also pretty lightweight for the amount of tread. I also like the tubeless ready ability, although I haven't converted yet.

Weakness:

None

Decided to go with this tire just on the front to increase my cornering. It was a great decision, you can lean in to turns and these tires will stick all the way through. I haven't really had any issues with these tires. I've used similar WTB tires as these and they seemed somewhat slow. But I haven't experienced that with the XR4. Overall great tire, especially upfront. I don't think I would put this on the back as well though, I prefer to go with a faster tire for the back.

OVERALL
RATING
5
VALUE
RATING
4
homer   Cross Country Rider [Apr 15, 2012]
Strength:

Tall lugs, rubber compound, sidewalls.

Weakness:

Weight.

Came stock on the 2012 Rumblefish that I bought at the first of the year. After 3 1/2 months and over 500 trail miles (tubeless), I'm as confident on these tires as with my previous eventual set-up of Nevegal front/Mt. King rear. Grips as well as any other I've tried in wet conditions. Turned a fast a lap yesterday at my "home trail" on dry hard-pack and loose sandy and they stuck in the corners. Couldn't be happier with them.

OVERALL
RATING
4
VALUE
RATING
5
Showing 1-10 of 10  

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