Hi,

I am after some info regarding putting 20" wheels on the SC430. I have been advised by Kahn that would suggest the 20x8.5 and not the 20x10. Can someone please provide details of the offsets on the OEM alloys. I know that some of the US members have used 20x10s.

A few other questions.

I have heard rumors about the SatNav being affect by bigger wheels. If so, then why and also does the SatNav work off of the front or rear wheels or by the radio signals to the satellits?
Would bigger wheels reduce the actual speed being driven at compared to the speedo or increase it . I believe it will be a 4.4% change.
Would the wider wheels at the rear help traction in any way?
If I went for 19"s what would be the max that I could fit in the rear (275, 285s).



Appreciate your help!

Vin