When the time comes to replace your tires, do you find...

[willgill]

driven tyres wear down faster than non driven tyres, who knew

[R60BBA]

that your rear tires wear quicker than the fronts? I tend to be heavy on the throttle and light on the brakes, so I am not surprised particularly, but it seems pronounced on the Z. I also tracked the car 3/4 times last summer, but I think the front tires could last thru another set of rear Pilots!

Surely this would be the same for all RWD cars and not just Zeds...?

[markalp]

Forgive my ignorance, do you have your tyres over inflated to make the tyres last longer and to get slightly better MPG? and after a motorway run what do your pressures look like once the air has heated up inside the rubber?

[markalp]

driven tyres wear down faster than non driven tyres, who knew

If you saw my fat arse it is understandable that tyres on my side of the car would wear out quicker

[willgill]

driven tyres wear down faster than non driven tyres, who knew

If you saw my fat arse it is understandable that tyres on my side of the car would wear out quicker

[extaz]

that your rear tires wear quicker than the fronts? I tend to be heavy on the throttle and light on the brakes, so I am not surprised particularly, but it seems pronounced on the Z. I also tracked the car 3/4 times last summer, but I think the front tires could last thru another set of rear Pilots!

I recently noticed that mine are in serious shape on the inside edges. This seems to be caused by the camber in the rear. I also drive hard enough to cause this but it is ridiculous to wear out the inside edges,,it basically could mean that the inside tire on a hard turn is dragging the inside edge. I have done some set -up work in years past for tracking and autocross. Using a pyrometer the alignment can be set to wear evenly and this usually provides the best grip. I am going to have the rear camber set to -1 degree. We shall see.
If yours are wearing evenly, I would not worry about it. Most cars push (understeer) and therefore wear out the outer edges of the front tires when tracking. The Michelins may be doing a good job if they are not wearing out on the outside edge in front.
So are the rears wearing on the inside edge or are they wearing evenly?

[Smartbear]

that your rear tires wear quicker than the fronts? I tend to be heavy on the throttle and light on the brakes, so I am not surprised particularly, but it seems pronounced on the Z. I also tracked the car 3/4 times last summer, but I think the front tires could last thru another set of rear Pilots!

I recently noticed that mine are in serious shape on the inside edges. This seems to be caused by the camber in the rear. I also drive hard enough to cause this but it is ridiculous to wear out the inside edges,,it basically could mean that the inside tire on a hard turn is dragging the inside edge. I have done some set -up work in years past for tracking and autocross. Using a pyrometer the alignment can be set to wear evenly and this usually provides the best grip. I am going to have the rear camber set to -1 degree. We shall see.
If yours are wearing evenly, I would not worry about it. Most cars push (understeer) and therefore wear out the outer edges of the front tires when tracking. The Michelins may be doing a good job if they are not wearing out on the outside edge in front.
So are the rears wearing on the inside edge or are they wearing evenly?

Hi, I don’t think it’s possible to adjust the rear camber down to -1 degree, I think the most it can go down to is 1.5 degrees?
Rob

[extaz]

Hi, I don’t think it’s possible to adjust the rear camber down to -1 degree, I think the most it can go down to is 1.5 degrees?
Rob
[/quote]
I believe the minimum spec is 1.6 degrees for my car, now that you mention it. I will try to get it as low as it will go. Camber can also affect Toe which also can cause a lot of wear, so everything must be done properly and in the right order. Ageing springs and bushings and loaded weight also affect alignment. Be happy if your tires wear evenly. Most BMWs have quite a lot of negative camber in the back. It seems extreme to me because I don't see it on any other performance cars. The tires are expensive on a 35i and they can not be rotated. In any event the rears will wear out first because they put down quite a lot of power and also the skid control intervention will do some subtle braking. Power oversteer (drifting) type driving obviously is another cause.

[Havard]

Will be replacing my rear Goodyears soon. They have lasted about 20k miles.
Running at 42 psi they have worn in the centre slightly more than the edge. So will run 40 psi on the new ones.

That seems high to me. I have 33 all round usually and mine wear fine. Bald in the middle is a sign of over inflation.

H.

[Busterboo]

33! E89? And your Porsche?

[R60BBA]

33! E89? And your Porsche?

Can’t go wrong with 33 / 36 (assuming you’re running 18s) !

[Busterboo]

[Havard]

33! E89? And your Porsche?

No, just the M on 18's. I am sure the manufacturers recommendations are 33 on the rear and up to 38 at the front, fully loaded. Would have to check, as I am not near the car at the moment.

I would need to check the Cayman but after having brand new tyres put on at a specialist, they were 34 all round I think.

H.

[Z4Rick]

that your rear tires wear quicker than the fronts? I tend to be heavy on the throttle and light on the brakes, so I am not surprised particularly, but it seems pronounced on the Z. I also tracked the car 3/4 times last summer, but I think the front tires could last thru another set of rear Pilots!

Surely this would be the same for all RWD cars and not just Zeds...?

On performance cars, with ample HP and torque, I'd assume more HP equates to faster tire wear, but I had hoped the staggered setup might have evened out the wear. Ive been driving pickups and 4X4s for too long....and enjoy the Z's power too much!

I think its just part of the price to be paid for a "spirited" driving style....and I see little reason for change!

[Z4Rick]

that your rear tires wear quicker than the fronts? I tend to be heavy on the throttle and light on the brakes, so I am not surprised particularly, but it seems pronounced on the Z. I also tracked the car 3/4 times last summer, but I think the front tires could last thru another set of rear Pilots!

I recently noticed that mine are in serious shape on the inside edges. This seems to be caused by the camber in the rear. I also drive hard enough to cause this but it is ridiculous to wear out the inside edges,,it basically could mean that the inside tire on a hard turn is dragging the inside edge. I have done some set -up work in years past for tracking and autocross. Using a pyrometer the alignment can be set to wear evenly and this usually provides the best grip. I am going to have the rear camber set to -1 degree. We shall see.
If yours are wearing evenly, I would not worry about it. Most cars push (understeer) and therefore wear out the outer edges of the front tires when tracking. The Michelins may be doing a good job if they are not wearing out on the outside edge in front.
So are the rears wearing on the inside edge or are they wearing evenly?

They are worn evenly, and the front shows some wear on the outside edge, but its hardly an issue and a recent alignment may have corrected that....