Will 235/45/17 on a stock 03 cl type s rim throw off the speedometer
or will a 225/50/18 tires throw off the speedometer
is 235/45/17 tire safe for 03 cl type s stock rim even though it is only 7 in
IF not is 225/50/17 safer or 225/45/17 better

 

http://www.americastire.com/dtcs/infoTireMath.dos

Calculate it.

 

No
Yes
235 fit fine

 

Nope 235/45/17 is the same as stock spec as far as speedo readings go.