Well done, looks to be spaced just right!

 

Well, I finally took a break from working on the house and got the new wheels and tires bolted up and put 1,000 miles on them. (245/40 on 19x8.5 w/ 45 offset) Going from 225/50-18 with 2/32 tread to 245/40-19 with 10/32 tread didn't have an obnoxious effect on ride quality, but it's noticeable over broken road. I'm a little leery of how the comfort will deteriorate once I start chewing through the tread depth, as I definitely noticed a difference as I wore through the 225/50's.

I definitely like the way that the wheels turned out, but next time I'll be going for either 255/40's or 245/45's. I'd take a hit in the acceleration dept, but I think I'd lean towards the 245/45's if they'd clear . . . an extra 0.48" in radius is pretty substantial, however. I wonder if anyone has ever tried it.

 

 

Coupe or sedan? Sedan will be flush (w/ some poke if you're not lowered) running 255/35/20s all around, coupe will be able to run more tire for a flush fit, up to a 275/30/20 all around.

 

 

Here's my G on 18x9.5 +38 when I was running 245s all around, yours would poke out another 3mm, you'll notice in front there's some room at the fender edge for a bit wider 255 tire.
https://www.myg37.com/forums/18/2765...ml#post4044919
Here's my G now on 285s in back (same 9.5 width all around) this is the widest you could run in back w/ camber at -1 all around.
https://www.myg37.com/forums/18/2765...ml#post4135181

As far as specific tires, depends if you want Summer or All Seasons.

 

anyone running 19"x9.5 +38 offset ?? will it stick out a lot ?

 

I am~running squared 245s
https://www.myg37.com/forums/18/2765...ml#post4044919
Running staggered 245/285s
https://www.myg37.com/forums/18/2765...ml#post4135181

 

 

That will be close to what I'm at w/ my 9.5 set in the above links (post #1028), the 20mm spacer in front would be 4mm in from mine, and the 15mm would be 9mm in from mine out back.

I assume you have a sedan.

 

 

So the question that I have is in regards to the rear. You mention that I will be 9mm in out back. When I measure fender to lip of wheel today the rear are closer to the edge of the fender than the front hence my idea of running 15mm spacer out rear and 20mm out front. Is it because when I lower the car the rear wheels will get pulled in that I probably need to go with 20mm all around to be squared? Apologies for my ignorance. I am a 43 year old man who just picked up his first import.

 

I was just referring to my setup and what to expect if you added 5mm less spacing in back. The actual wheel edge in front has a little less room to go out since the fender isn't flat-rolled like the rear. To be honest what I would do is get 1 pair of 20mm spacers, put one in front and one in rear and see how you like the fit, if you feel you need 5mm less in back (or in front) you then get another pair in 15mm, if you happen to like all 20mm then get another pair of 20mm, that's what I'd do

 

 

Here's mine on 18x9.5 +38 on 245s, you would be 3mm further out on the wheel (so almost the same as my set) and there would be room to run 255s all around, if you go wider to a 265 the front fender edge may make contact on the inside under heavy compression since it isn't fully rolled like the rear fender is.
https://www.myg37.com/forums/18/2765...ml#post4044919
So a 255/40/19 FTW!