Ok so i just baught a staggered pair of cobra R`s for my 08 stang. they are 18x9 and 18x10 i know my tires will fit the 18x9 wheels but barely because they are 235/50 but what size tire would be a good fit for the 18x10 back wheels?

 

welcome

the 235/50 will fit, but it's definitely too narrow for my taste.

here's my opinion:
18x9 with a 255/45/18 or 265/45/18
18x10 with a 285/40/18 or 295/40/18

 

good advice on these tire sizes.^^^^^