315's
 

Someone's selling wheels off there stang locally they are 17x9 with 245/45/17 front and 17x10.5 with 315/45/17 rear I don't know the offset yet what offset do they have to be to work for me and will I need to roll fenders ?
Front:17x9 5.5 backspacing (245/45/17)
Rear 17x10.5 6.5 backspacing (315/35/17)

MEGA-sidewall FTL

If you have VDC, that would definitely throw it out of wack. And I can't imagine you could make that fit being that it is so tall/wide. Idk what you could compare it to, I've never seen somebody with a similar tire

Double check the tire size, i will bet they are 315/35-17

They're 17s, and have a sidewall almost as tall as the Empire State Building. Are you using these for drag racing? If not, I'd look for another set of wheels.

An offset around +20 will bring you nice n close to the fenders, but with those tires I'd be looking for around +25-30. He's not likely to know the offset, but he may know the back spacing. I'd take all the neccesary tools for measuring offset with you and have a chart for backspacing conversion handy. google "convert backspacing to offset" or something similar to find that. I haven't don the math, but that looks like VDC might get confused.

Join Date: Apr 2008

3 years and you are not proficient using a offset calculator. Shame on you.

My 18's have a 45 sidewall. No vdc here wheels and tires confuse the **** out of me anything else I'm good

well the 45 is a percentage. So your current sidewall is a percentage of your width, most likely 45% of 245. Now if you have a 315/45, your sidewall is 45% of 315. See where you are going to have problems? Much larger diameter and circumference.

^he doesnt have VDC, so he wont have any problems.

If the rims fit, you can use those tires. Thats a 28" rear tire compared to ~26" stock. I use 28" drag radial all the time. and with no VDC, it will be fine.

Ok thank you the guy wants $500 and tires have 75% tread so you can't go wrong

Post some pics of em...kinda curious what these things look like.

I was about to say that we might be able to get you a brand new set of Enkei RPF1s for about the price of used wheels, but not when you're getting a deal that good! Enkei makes a great wheel at an excellent point, but $500 is XXR territory lol

They are 6.5 backspacing anyone know the conversion I'm at work so can't do the math lol I will post pix when I get home

That, my friend, is an aspect ratio. A 45 sidewall on 315 is A LOT taller than a 45 sidewall on a 245.

This is going to look hilarious if in fact that's the specs.


EDIT: You still need to determine what the offsets are...

why would it look hilarious? becuase of sidewall height? all you have to do it tuck it into the wheel well if you are that vain. its gonna need a drop anyhow.

6.5" backspace on a 10.5" rim is a ~+19 offset. good but you'll need fenders rolled for sure.

if the 9" rim is 6.5" backspace as well that like a +38. terrible.

Ok cool thx I'm gonna go and test fit them of course just wanted to make sure I'm not wasting my time. I was originally going to ct to pick up a winter set up and the person sold them after I made all the arrangements to come get them so I decided to go the total oposite I guess lol 315 here I come

wow so you guys were right the fronts are 17x9 offsets unknown with 245/45/17
rears are 17x10.5 with 315/35/17 offset 19? its an enthusiast so no vdc will i still be good the tires are only temp till i wear them out thank you everyone for the help

Front and rear tires are the same height , if you have TCS the car will not like the tires. ABS will be slightly affected , but they will work.

ok cool i will have the front offset later today i cannt seem to remove the pix from the file thing the look similar to cobra r wheels i think these are them
only offset dosent match he is re cheacking tonight

http://www.stage3motorsports.com/c=e...Wheel-Set.html