Gen 2 C4S inside tyres wear .. on all 4 with geo spot on!
Discussion
Although the geo was checked, it may just mean it's within tolerance, but not that corners are set to up the same settings. Do you have the measurements, and if so how do they compare to each other. The geo can be optimised for different driving characteristics, but still kept within factory tols.
mr pg said:
Although the geo was checked, it may just mean it's within tolerance, but not that corners are set to up the same settings. Do you have the measurements, and if so how do they compare to each other. The geo can be optimised for different driving characteristics, but still kept within factory tols.
This.Had my 6 monthly geo check yesterday.
The factory tolerances are quite wide and you can do a lot of adjustment and stay within spec.
Your tyre wear indicates a little too much negative camber/toe for your driving.
thetubbster said:
thanks guys very helpful
Too much toe.It is toe, toe and toe that causes inside tire wear. Not camber. Look at the rear of a Porsche going down the road and its rear tires are flat on the ground.
Alignment settings are goofy looking on paper and goofy looking when the car is stationary because the alignment only really make sense when the car is moving.
With good alignment with reasonable amount of toe and I have managed nearly 23K miles out of a set of rear tires on my Turbo. I get an easy 20K or more miles out the rear tires on my Boxster, too.
Front tires easily last twice as long but by 40K miles are getting noisy and hard/slick so I replace both rears at 20K then all 4 tires at 40K miles.
Rockster said:
Too much toe.
It is toe, toe and toe that causes inside tire wear. Not camber. Look at the rear of a Porsche going down the road and its rear tires are flat on the ground.
Alignment settings are goofy looking on paper and goofy looking when the car is stationary because the alignment only really make sense when the car is moving.
With good alignment with reasonable amount of toe and I have managed nearly 23K miles out of a set of rear tires on my Turbo. I get an easy 20K or more miles out the rear tires on my Boxster, too.
Front tires easily last twice as long but by 40K miles are getting noisy and hard/slick so I replace both rears at 20K then all 4 tires at 40K miles.
You're clearly not driving it correctly! It is toe, toe and toe that causes inside tire wear. Not camber. Look at the rear of a Porsche going down the road and its rear tires are flat on the ground.
Alignment settings are goofy looking on paper and goofy looking when the car is stationary because the alignment only really make sense when the car is moving.
With good alignment with reasonable amount of toe and I have managed nearly 23K miles out of a set of rear tires on my Turbo. I get an easy 20K or more miles out the rear tires on my Boxster, too.
Front tires easily last twice as long but by 40K miles are getting noisy and hard/slick so I replace both rears at 20K then all 4 tires at 40K miles.
OP, funny you should experience this after an alignment at Reading OPC.
They did my Cayman last year. After 5k miles both front tyres, new ones fitted just before they did the alignment, were completely bald on the inside. Outsides had barely been touched.
I know the inside edge does wear quicker, but to completely scrub a set after 5k of only road driving!!
I took it back and was told I must have hit a pothole as the front settings were well out again. I am prepared to swear on my life I never hit a pot hole with both front tyres, or numerous potholes on either side of the car.
They did the alignment again for free, but I had to buy new tyres. I've now done nearly 10k since the alignment and the fronts are wearing as expected. Go figure!!
They did my Cayman last year. After 5k miles both front tyres, new ones fitted just before they did the alignment, were completely bald on the inside. Outsides had barely been touched.
I know the inside edge does wear quicker, but to completely scrub a set after 5k of only road driving!!
I took it back and was told I must have hit a pothole as the front settings were well out again. I am prepared to swear on my life I never hit a pot hole with both front tyres, or numerous potholes on either side of the car.
They did the alignment again for free, but I had to buy new tyres. I've now done nearly 10k since the alignment and the fronts are wearing as expected. Go figure!!
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