• Notice for iPhone users: DO NOT use the image size reduction option when uploading photos to the forum. This causes portrait images to post as landscape. We have added a warning to the image insert pop-up as well.

Which axle has faster tire wear, front or rear?

MomoJeep

MomoJeep

Basic User
City
Seattle
State
WA
Conventional wisdom says front tires wear faster due to handling both the majority of braking and steering. Is this necessarily true?

(I don't rotate tires as often as I should, and noticed the front were indeed more worn. So I swapped them with the rear, and it's been several thousand miles and the tires that are now on the front (with more tread) do not seem to be catching up with the amount of wear on the tires that are now on the rear.)

Also, there's the assumption that the front of the jeep is heavier (Engine). But I have a hardtop and a lot of gear in the back.. Still heavier in the front?
 
In most cases, front tires wear faster (drag racing not withstanding).
 
This is interesting... there seems to be no consensus on this. The people who say rear wear faster point out that as the dive axle there is a constant force/load on the tread, whereas the fronts just spin....
 
Even in rear wheel drive cars, the front tires usually wear faster (assuming they're the same size). As you said earlier, the front wheels do most of the braking/steering and that's what wears tires the most. When I worked in a tire shop back in high school, you could always tell if people didn't rotate their tires because the front tires would be bald.
 
Assuming an open differential in the rear axle, the front tires will likely wear faster. As stated, they take nearly all the lateral force from turning, and the majority of the braking force due to forward weight transfer. Not to mention, front axle geometry often does not have the tire sitting square on the pavement due to added camber for lateral weight distribution when turning. Therefore, the fronts will tend to wear one edge of the tire more (depending on camber) and then "cup" the opposing edge due to contact patch rippling that can cause outside tread blocks to slap the pavement. Tire pressure plays a pretty big part in all of this too, and typically the fronts have a higher weight bias on them due to the engine thus requiring slightly higher pressure. The pressure itself doesn't matter, but how the pressure relates to contact patch distortion under load, aka "bulging".

I'm sure there is a more scientific response, but that is my understanding via shadetree wisdoms.
 
This all makes sense. And.. I think it may also depend on the type of driving. I use my scrambler for long-roadtrips, but not as a daily driver. So it sees a lot more freeway miles than stop-and-go miles. During freeway driving there is a smaller - but constant - load on the rear tires. Braking and cornering only happen a tiny fraction of the time vs. driving several hours a day on the freeway loading the rear wheels. So I guess, it all depends. But I suppose the driving load on the rear could be so small that it still doesn't ad up to the same as what the front's deal with..
 
You must log in or register to reply here.
Back
Top