I have a 2008 G37S coupe with the 19" factory rims.
Its time for new tires so i would like to go bigger size , what is the biggest i could go without the use of spacers?

From what i have read 245/40/19 and 275/35/19 should work with out spacers , could somebody confirm it?

 

Those sizes will fit fine. Many are using that combo with good results.

 

Thanks for the reply Neal , w/o spacers though?

 

Many using that combo w/out spacers.