What are the widest front tires we can use on an 19 inch wheel?

Due to restricted tire manufacturing in R compound the below are my choices:
225/40ZR19 89W
235/35ZR19 87W
245/40ZR19 94W

I am RWD so no need to compensate with rear.

Thank you.

 

I run a 265/30/19 and its lowered with just springs.

 

Any issues or rubbing at all, I was contemplating a 255/35-19.

Please anyone else on here that has good knowledge if that size works, I think with my adjustable trailing arms I could compensate with a small tweek forward if that did not kill the geometry badly. With my 245/35-19 I now get the slightest rub on the back of the wheel well liner.


Ms4... I now run a 245/35-19 on a lowered car and I get the slighest rub when turn 3/4 lock; it rubs on the wheel well liner. The tire you are considering (245/40-19) is bigger so I would think that would be worse.

 

it depends on the tire itself.
an R compound tire usually runs wider than advertised.
for example a Toyo T1R (street tire) with a 235 35 19 measurement, will be SIGNIFICANTLY smaller and narrower, and have a more "concaved" sidewall profile compared to a Toyo r888 in the same size.

here is a toyo street tire

heres another one https://encrypted-tbn3.google.com/im...3rhm4F8NUnQwla

here is a toyo R compound (notice how the shape of the sidewall compared to that girly street tire

 

dont put a 255 30 19.
the added 10mm are negated by that extra sidewall...
a fair compromise is to run a beefy 245 35 19.

 

Not a direct answer to your question, but If it's for the track I'd go for some used 18" rims. You'll have wider choice of R compound rubber at a lower price.

 

I have not noticed any rubbing. I will say turning the wheel takes more effort than it did with the 235's, but havent encountered any other drawbacks other than the added weight.

 

I'm still AWD, what rear tire will match up with a 255 front in 18's?

 

265/35 is good with 315/30... but need 9" rim


OP- you need to tell us what rim width you have.... if you can go to 9" more choices.

And why 19" for track?!?