We’ll make this a great experience
It’s our mission to provide you with world-class hospitality every time you visit us online or in-store. We’ll always take care of you. It’s the Trek way.
"Spot-on"
"Mud, grease, wet roots, hard packed, leaf covered, you name it—these XR4s stick to everything and always tempt me to push harder and harder"
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4.5/5 stars
"One of our favorites...Excellent, stable but smooth ride feel, trustworthy all-conditions grip and reasonable roll"
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"Great all-rounders"
"They roll quickly, are predictable, brake well, provide excellent hold off-camber and are a reasonable weight with ample protection"
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"Fast-rolling with a predictable response"
"They’ve held up well, excelled in some of the sloppiest conditions I’ve ever ridden in and been both predictable and reliable in all situations"
Read moreHow to change a flat tire
Flats happen, learn how to change your tube quickly so you can get back rolling.
Learn moreProduct features
Inner Strength
Our Inner Strength Casing is made of lightweight nylon inserts that provide strong, supple sidewall protection for added tire durability.
Go tubeless
A properly set up tubeless system lets you run lower tire pressure for better traction, added confidence, and a smoother, faster ride.
Better together
Bontrager offers a complete tubeless system including wheels, tires, sealant, valves, and rim strips. Every part of this setup is designed to work smoothly together, for the best in performance and ease of use.
30-Day Unconditional Guarantee
If for any reason you're not satisfied with a Bontrager or Trek aftermarket purchase, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.
Learn moreYour guide to MTB tires
We'll help you find the right rubber for the trails you love to ride.
Find your tireTry our tire finder
The right tire can make every ride better! Find the best tire for however and wherever you ride.
Find your tire| Size | 27.5" x 2.4" | 29" x 2.4" | 29" x 3.0" |
|---|---|---|---|
| Diameter | 27.5" | 29" | 29" |
| Width | 2.4" | 2.4" | 3.0" |
| TPI | 120 TPI | 120 TPI | 120 TPI |
| Durometer | 61a/50a | 61a/50a | 61a/50a |
| Bead | Folding | Folding | Folding |
| Type | Tubeless Ready (TLR)/Clincher | Tubeless Ready (TLR)/Clincher | Tubeless Ready (TLR)/Clincher |
| Minimum pressure | 30psi | 30psi | -- |
| Max pressure | 50psi | 50psi | 30psi |
| ETRTO | 58-584 | 58-622 | 76-622 |
| Tread | Knobby | Knobby | Knobby |
| Construction | Inner Strength | Inner Strength | Inner Strength |
| Studdable | No | No | No |
| Sealant volume | 2.87oz (85mL) | 3.04oz (90mL) | 3.55oz (105mL) |
| Weight | 765g | 800g | 1100g |