Challenge Gravel Grinder Pro Handmade TLR Tire - 700x40 | Black
Tires
Challenge Gravel Grinder Pro Handmade TLR Tire - 700x40 · Black
Challenge Gravel Grinder Pro Handmade TLR Tire - 700x40 | Black
The Gravel Grinder is Challenge's tire for cruising gravel at speed, with more cornering confidence when the ground turns soft or wet. Read the overview
At a glance
- Size
- 700 x 40
- Casing
- Super Polyester, 260 TPI
- Compound
- SMARTplus
- Puncture protection
- PPS2
4 in stock
Free shipping on US orders over $100.
- 30-day returns in new condition. Read the return policy.
- Price matching. Found it for less? See how it works.
Overview
What is the Challenge Gravel Grinder Pro Handmade TLR built for?
The Gravel Grinder is Challenge's tire for cruising gravel at speed, with more cornering confidence when the ground turns soft or wet. A diamond center tread clears dirt and mud and grips on grass and sand, while wide-spaced side knobs hook into soft ground and help guide the tire through ruts. The mixed tread rolls well and gives you a bit more cornering grip than a pure fast-rolling pattern.
This is the PRO handmade version in 700 x 40 with black sidewalls. It pairs a 260 TPI Super Polyester casing with Challenge's SMARTplus compound, a tougher and more cut-resistant rubber that holds its edges longer on gravel. A second layer of puncture protection (PPS2) sits on the inside of the casing for rough roads and gravel. It is tubeless ready and compatible with both hooked rims and ISO/ETRTO-compliant hookless rims. Challenge recommends its Smart Tubeless Sealant for setup.
All the specs
MPN 00539
- Size
- 700 x 40
- Series
- PRO (handmade)
- Casing
- Super Polyester, 260 TPI
- Compound
- SMARTplus
- Puncture Protection
- PPS2 (extra layer inside the casing)
- Type
- TLR (tubeless ready)
- Rim Compatibility
- Hooked rims and ISO/ETRTO-compliant hookless rims
- Sidewall
- Black
FAQ
Good questions
Get to know Challenge
There's more to Challenge than this one product. Our Challenge page has the full Challenge lineup we carry and more about the brand.
Visit the Challenge page →How is the Pro Handmade different from the standard Gravel Grinder TLR?
Both use the same Gravel Grinder tread. The standard Gravel Grinder TLR is vulcanized with a 60 TPI nylon casing and is for hooked rims only. The Pro is handmade with a 260 TPI Super Polyester casing, SMARTplus compound and PPS2 protection.
Can I run it on hookless rims?
Yes. Challenge lists all of its handmade TLR tires from 33 to 45C, including this 700 x 40, as compatible with ISO/ETRTO-compliant hookless rims. It also works on hooked rims.
What conditions is the Gravel Grinder best in?
Challenge built it for riding gravel at speed while keeping more cornering grip in soft and wet conditions. The diamond center sheds dirt and mud and grips on grass and sand, and the side knobs bite in soft ground and ruts.
Reviews
What riders say about the Lab
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
Questions about this one?
Not sure on size, compatibility, or whether this is the right one for you? Ask us. A real person here will answer.
Goes straight to the Lab with the product you were looking at attached. No newsletter signup.
