17 inch OEM from a 330 ...will they fit

[jtispoindexter]

my 328 xi 2008 , equipped with 16s ... do i just drop the sidewall down a hair to compensate for the diameter ? wondering

[NStrong]

That's right. 225/45 would be great. Since it's an xi, maybe a 235 tire... Not sure what you guys prefer to run.

[pauljcl]

my 328 xi 2008 , equipped with 16s ... do i just drop the sidewall down a hair to compensate for the diameter ? wondering

Assuming all else fits, check with this calculator what size tires to use (to maintain the same diameter as much as possible):
http://www.miata.net/garage/tirecalc.html
Good luck!

[jtispoindexter]

provided the lock to lock steering is clear , the rims will be beautiful winter tire support , compared to steel ...

[jtispoindexter]

tried a fit test , 1/4 inch clearance between rim edge and shock case , with tire would brobably rub :-( darn , they were a good deal