964 wheel/tyre prob?

[angry]

I have a friend with a 1990 c4 with RUF 17" wheels the rears are 255/40/17 but the fronts are 8" wide rims running 235/45/17.
On smooth roads the car handles ok but on slightly/very rough roads it is absolutly shocking.I drove it today and nearly ended up on the wrong side.
It has bilstien shocks and springs....Is the front tyre size the problem??????
Thanks Dan

[warmfuzzies]

Sounds awfully large on the front, biggest I know of on regular rims is 225, C4 or oversize 18"s.

Kevin.

Kevin,

[graeme36s]

most likely a geometry problem.

[tony.t]

graeme36s said:

most likely a geometry problem.

Agree geometry problems most likely to cause bumpsteer not helped by the much heavier RUF wheels and overwide tyre.

[angry]

Cheers.
Dan

[CraigyB]

I run with 225 17s front, 255 17s rear, with no problems.