audi a4 abs problems

[bluebird1980]

Hi guys im a newb to the forum was looking for some advice iv just bought a set of 18 inch wheels. Iv put them on my car but the abs light has come on. Iv scanned the car and its come up with a code 00597 Wheel speed impulses deviation. Im not sure what that means really lol. I know the front tyres have a 40 profile where as the back have a 45 profile. Any help please you lovely lot

 

[john777w]

I think you've answered your own question!
Difference in rolling circumference!

 

[pauldazzle]

Yep that'll do it.

 

[bluebird1980]

so its because of the profile of the tires on the back is bigger than the front?

 

[pauldazzle]

Yep.

 

[bluebird1980]

Yep.

Thanks guys

 

[pauldazzle]

You need 40 profile on the back aswell.