Hello Wheel guru's, I have a predicament on my hands. About two weeks ago i was installing my new exhaust and noticed that the inside of my tires were showing wires. I'm dropped quite a bit, and I immediately knew what the problem was, (camber issues) and started looking for adjustable camber arms. Anyways... The previous owner had installed XXR 522's. The wheels are sub par, but I'm in college and want to make the best of them until I can afford some Meister S1's. The XXR's are 18x8.5 +30 up front, and 18x9.5 +25 in the rear. With 255/40/18 and 285/40/18 tires respectively. I'm not a speed demon, and don't need all the rubber that was originally installed. The front tires are in good shape and are Nitto Invo's. But I'd rather go a little stretch.. rather than purchase the same size for the rear. So i was looking for tire stretch calculators, and found this one http://www.willtheyfit.com/. I punched in some numbers and came up with 225/45/18 FRONT, and 255/45/18 in the back, to be relatively the same ratio, i think its like .26mm off or something Idk. I guess my question is, will these tires sizes give me a little stretch to where I could put some spacers front/rear to make it sorta-flush? I don't want my lip to poke out past my fender, but I love the flush look. and Minnesota roads aren't the best for low and slow, at least where I live. So I'm trying to get the best of both worlds. Any suggestions/ help would be greatly appreciated!!

PS: sorry for the long read.

 

225/45 and 245/45 would be your standard OEM sized tires, they will fit your wheels just fine.

 

I didn't know that 8.5 and 9.5 were standard rim sizes, and will that give me a little stretch? I might wanna go a little smaller if it doesn't.

 

Yes you will have stretch and yes you are doing it all wrong. If you want stretch , look for nothing smaller than 9.5 front and 10.5 rear. Even a 10.5 front and rear setup will set you up for the HellaGay look.

 

You can put a 225 mm tire on a 8.5 inch wheel and a 255 mm tire on a 9.5 inch wheel. Sure why not?

 

I don't want hella stretch. But thanks for the words of wisdom broski.. Lol

 

That sounds about right.
My front rims are 9.5 and are on 245 tires.
IMHO, it's the perfect mild stretch.
For 8.5 I'd suggest 225 or even 215.

 

Thanks man. That's what I'll be doin.

 

Buy toe arms.. They affect the tire wear way more than the camber arms.. Trust me..

 

With those offsets you should run a meaty tire, don't kid yourself or look like you should have on a bowling helment, run proper tire sizes until you have proper wheels to have the stretch/flush look..

Just my .02

 

The calculator you posted is incorrect. I tried to use it in the past and it's completely wrong. I wound up creating my own calculator because the only one that works properly has started charging you to use it. I've attached the one i've made.

 

^ Thanks supsam86. I guess I had no way to tell it was wrong or not. lol

Edit: How do you use that thing? Just plug in my setup to where your numbers are?

 

I thought the same thing at first, but there actually is a way to test it. If you put in 235/45/17 X8 +33 in as your first tire and 255/45/17 X8 +33 as your second tire it will tell you that there is no difference in inset or poke... this is obviously incorrect... the 255 is 20mm wider, which means your inset and poke should both be 10mm more than your first tire.

To use my calculator all you have to do is click on the cells that contain the wheel and tire dimensions (17 X 8 with a 33 offset and a 235/50/17 tire is default for original front tire and wheel). When you click on the cell you'll see that an arrow appears, click on the arrow and a drop down will appear, select your dimensions in the drop down. Do the same for the new tire and wheel for front and back.

BTW, at the bottom, you'll see a box labeled speedometer with "60" next to it. The number to the right of the 60 (cells C18 and C38) is the speed you'll actually be going when your speedometer is showing 60mph when you have your new tires mounted.

Let me know if you need any help. I know the calc isn't very user friendly, I didn't think anyone else would be using it when I made it.

 

Thanks alot man! Ill be giving her a shot tomorrow.