17 or 18?
Thread Starter
Joined: Aug 2002
Posts: 4,578
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From: Kissimmee, FL
17 or 18? I'm wondering on getting 17 or 18 inch rims. What kind of tire fitments can I use without getting any rubbing problems? Has anyone here installed 315 17's on the rear of their TA or Camaro? Was there any problems with that? I have heard that getting 18's for 315's is too big. Just so confused on what to get. I want to get the widest in the rear without any rubbing problems. I know about the tub kits but want to do this without altering anything in the back.
Re: 17 or 18? Man - and I thought you were wanting to know if girls were legal at 17 or 18! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> It's 17 in Texas! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
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Joined: Jan 2002
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From: Earth
Re: 17 or 18? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 1999Daytona500PaceCar:
<strong>Man - and I thought you were wanting to know if girls were legal at 17 or 18! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> It's 17 in Texas! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'm pretty sure legal age is 16 in Michigan. I'll have to start parking up at the local high school. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Kidding of course.
<strong>Man - and I thought you were wanting to know if girls were legal at 17 or 18! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> It's 17 in Texas! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'm pretty sure legal age is 16 in Michigan. I'll have to start parking up at the local high school. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Kidding of course.
Thread Starter
Joined: Aug 2002
Posts: 4,578
Likes: 49
From: Kissimmee, FL
Re: 17 or 18? LOL you guys are too much. Ok so someone has 17's with 315's on. Anyone has 18's with the same setup? If not, guess I'll have to go with the 17's then. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
Re: 17 or 18? Seriously though, I have seen 315's on 17's, I believe they are usually a 35 series profile and they will work out fine as long as you use a rim with the proper offset - otherwise you will end up doing a lot of wheelwell massaging as I understand it anyway.
I have not seen 315's on 18's, but know you would at least have to go down to a 30 series profile to even get close to the overall diameter of the 17 inch setup. Remember, your car will be a 1/2 inch higher off the ground by just going to an 18 and then the sidewall is even a little taller on a 315/35/18 than a comparable 17 version too. You can go to a few tire manufacturer websites like Nitto and look up the tires you would be interested in and compare the 'overall' diameter of the tires to see what I am talking about. A lot of times people forget about this point. Also, your effective rear end gear ratio is raised (lower numerically) the bigger the overall diameter - this too is overlooked many times. On stock tires your car may be set up with say 3.42 gears - you put a tire on with a 1 incher larger overall diameter and your "effective" ration will be more like a 3.30 say. This combined with the fact that with the extra material in the larger wheel and tire which is added weight as well - and you will lose a little RWHP and probably a tenth or two in the quarter.
People almost never think of these aspects and most don't need to - but when applying to a performance car - you should at least be aware of these facts. So I would definitely say stay with the 17 inch setup - besides it will save you more than a few bucks for further mods. Good luck!
I have not seen 315's on 18's, but know you would at least have to go down to a 30 series profile to even get close to the overall diameter of the 17 inch setup. Remember, your car will be a 1/2 inch higher off the ground by just going to an 18 and then the sidewall is even a little taller on a 315/35/18 than a comparable 17 version too. You can go to a few tire manufacturer websites like Nitto and look up the tires you would be interested in and compare the 'overall' diameter of the tires to see what I am talking about. A lot of times people forget about this point. Also, your effective rear end gear ratio is raised (lower numerically) the bigger the overall diameter - this too is overlooked many times. On stock tires your car may be set up with say 3.42 gears - you put a tire on with a 1 incher larger overall diameter and your "effective" ration will be more like a 3.30 say. This combined with the fact that with the extra material in the larger wheel and tire which is added weight as well - and you will lose a little RWHP and probably a tenth or two in the quarter.
People almost never think of these aspects and most don't need to - but when applying to a performance car - you should at least be aware of these facts. So I would definitely say stay with the 17 inch setup - besides it will save you more than a few bucks for further mods. Good luck!
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Thread Starter
Joined: Aug 2002
Posts: 4,578
Likes: 49
From: Kissimmee, FL
Re: 17 or 18? Hey thanks for the response!! I'll go with the 17's then. So much fun, so little time. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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