Need help. I have new rims and need help with tire sizeses to fit my application. I have a 09 g 37S sedan lowered on swift springs with spc front/rear camber kit and toe bolts. Other than that stock sport suspension. Got a good deal on some wheels that was too good to pass up. Sizes: front 19×9.5 offset +35 and rear 19×10.5 offset +30. What are the best tire sizes that I can run without rubbing or major fender modification? Suggestions are much appreciated in advance. Tried search function and didn't get any help on these offsets on a sedan. Sorry,I am ignorant to the use of the tire calculator in this application. Thank you for all your help. I'm going to be ordering tires soon.

 

That +30 is aggressive for the rear. From the research I've found for 19" wheels a 255/40 & 285/35 has the closest revs-per-mile to OEM. Therefore your speedometer won't be too off from actual speed. That is what I plan on running.

 

Thanks a lot for your time and expertise with the numbers . Please bare with me I'm new to the way off sets work.I guess I probably should've done more research before my purchase. I know those probably aren't the ideal offsets for a sedan. But like i said I got a good deal on wheels and I'd like to try make them fit if possible. Even if it requires a slight stretch on tires. But I don't really want to have to pull the fenders to make it fit. Unless i absolutely have to. I am definitely trying to figure out my options at this point. Thank you sir for your help. It's much appreciated.

 

This is more than a stretch, you'll have to run more camber if you don't want to pull fenders.

FWIW, i run Swift Springs on my RWD now. With camber in spec, my 9.5+38 w/ 255s already extend a little beyond the fender (p.s. this is considered a slight stretch.) It clears when it tucks on full suspension compression. Based on measurements though, i am unable to run 275s on the current set-up without possibly rubbing.

Your rears will extend an extra 21mm by comparison. We're talking strictly wheel sizes here, not factoring in tire widths and profiles.

 

Aggressive? That may be up for interpretation...

I'll be running 10.5 +25 in the rear

 

Sedan or coupe?

Sedan, yes, it's fairly aggressive when taking OP's thoughts into consideration.

20x10.5 +34, roughly -1.9 camber with 285/30s and Eibach-like drop. It rubs.

 

I ran +30 20x10.5 before with a 275/30/20 rear tire and dropped with S techs it sure rubbed.

 

I want to thank all the guys that chimed in to try and help me with their knowledge and experience with this issue. So if I am understanding the consensus correctly. I have 3 options. option 1 run a 255/ low profile tire. Super duper stretched with lots of negative camber and probably still get rubbing/premature tire wear. Or option 2 pull the fenders. Or option 3 resell the wheels and buy some with proper offsets. Is this summary correct? Thanks again for all the guys that shared their time/experience to help me out. I'm in a pickle.

 

@soundmike

Sedan