Combined?
245-255/35/19 and 275/35/19 are a good combo, and probably the most common amongst Z enthusiasts.

245/275 are 3.1% difference
255/275 are 2.0% difference

245/35/19 is 0.2" shorter than the stock 225/45/18 front
255/35/19 is nearly identical height as the stock 225/45/18 front
275/35/19 is 0.1" shorter than the stock 245/45/18 rear

 

IDK if it would make a difference but my stocks are 17's, not 18's, i have an 03 enthusiast model
the 255/275 setup has a change of .66% in front and 2.71% in back, combined, the difference is equal to 3.37% which is over the allowed 3% difference.
the 245/275 setup has a change of .39% up front and 2.71% in back, so again equals 3.1%, barely over the 3%, the (275/295)/30 setup only changes 1.4% in front and .43% in the back which equals 1.83% difference, way under the limit
major point is i want to fit the 295/30r19 and 275/30r19 tires on these wheels because i like the beefy tire setup, so what would i have to do to fit em?

 

I'm sure the rears will need to be rolled if your lowered, and the fronts will be tight on the inside (but should clear with no problem) and pushed really close to the edge. May not rub but will be close.

 

im not lowered yet but will be soon, so yes i will roll the fenders, will spacers help the rubbing on the front or will it make it worse? should i use spacers on the rear or front or both? like i said, im kinda wheel disabled lol so i wanna figure it out before so i can plan ahead, thanks

 

Nah, I think you'll be tight on the outside requiring an aggresive camber setting.

 

If my understanding is correct, that's not how the 3% rule is applied. I think the delta between the front height and the rear height has to be within 3% of each other, like the stock wheels are, i.e.

[[(245*.45/25.4)+18] - [(225*45/25.4) + 18]] = 2.7%

I ran 255/35/18 tires, which are 1" shorter in the front and 1.75" shorter in the rear compared to the stock tires (3.9% and 6.3% shorter than the OEM tire), and the VDC was fine (some people don't have an issue with the same SIZE tire front and rear).

You need to be prepared to roll the fenders in the rear and maybe pull the fenders in the front and the rear if you plan on lowering the car.

 

ok thanks man, thanks for all the input guys

 

I don't know how ANY of you can determine what will or will not fit as far as size wise without knowing the exact tire brand and model the OP plans on running. Not all 265s, 275s, 285s, 295s, etc. are the same.

For example, there is no way the OP is fitting a 275 Michelin PS2 on a 9.5 +12 wheel up front under stock fenders on OEM suspension let alone on a lowered car without RC car camber settings.

 

Exactly, if you push the limits you're playing the mount and see game.

 

Agreed. My recommendations are always simply general suggestions based on my experience with dozens of combinations.

 

it can be done ! as of now im running a 275-35-19X10 up front +17 and rear is a 285 im going with a smaller tire up front tho