I currently have 235/70/15 wheel and tire combo. I measured this combo and got approximately 27" from floor to top of tire. Can someone please tell me how tall the above combo would be? Thanks.

Dave

check out this link
http://www.americanracing.com/techcenter/DiameterCalculator/DiameterCalculator.htm

24.7 for the 245/40-17
26.6 for the 245/50-17
Of course these numbers vary slightly by tire brand.

Here is another great calculator

http://www.rims-n-tires.com/rt_specs.jsp

245/40/17 = 24.7"
245/50/17 = 26.7"

Rgds
Chris

Or here. :)

http://www.1010tires.com/TireSizeCalculator.asp?action=submit

I just pulled out a set of tires that were on my 300zx. Size 225/50/16. Quite a bit smaller in height, but wider. I thought that 235 were wider then the 225. Looks as if I just need to go to a tire place an do some fitting.

Dave

P.S. Maybe it has a bigger backspacing?