[Evaldinis]

Hi I put yesterday wheels on my car front: 275/40/20rear: 315/35/20 front higher than the rear

 

[Evaldinis]

Could damage the car?

 

[Philth]

Yes, all wheels need to have the same diameter tires.

 

[Evaldinis]

Thanks

 

[noobytoogy]

All four tyres must be identical - same make, same model, same size same tread depth with a 2mm variance permissible on the same axle and 3mm variance between front and rear axles.

Until you sort it all out, do not exceed 50 mph / 80 kph [same as the spacesaver spare] otherwise you will burn out the clutches in the gearbox.

 

[ShadowImg]

It's not just don't exceed that speed, it's also do not exceed the maximal distance at less than that speed. I'm not sure the ruling on ours but it's usually 50 mph for 50 miles. Even at 25mph if you do this for too long you'll still overheat/destroy differentials.

 

[Evaldinis]

What if I switch off ESP till I change tyres

 

[Evaldinis]

ESP - Fault Code 00778 - Steering Ang. Sensor
Hi i did change Control arm bushings and the Steering wheel is not straight now. Shows now warning light for ESP on the speedo cluster. ESP - Fault Code 00778 - Steering Ang. Sensor.
after wheel alignment it fix?
Thanks

 

[hydrolocked]

What if I switch off ESP till I change tyres

No, it's a mechanical limitation, not traction control

 

[gtibobvr6]

Those are nearly the exact same size, i don't think you should have any problem. Other people run staggered setups..

http://www.discounttire.com/dtcs/infoTireMath.do

275/45/20 diameter = 28.66
315/35/20 diameter = 28.68

 

[noobytoogy]

Tires are nominal sizes and can vary in OD by quite bit, even different models of the same size from the same tire manufacturer, so you cannot use those dimensions.

Stick to 4 IDENTICAL wheels and tires at all times or you might well be looking at a new gearbox.