15 x 7 or 15 x 8 with 255/60/15 tire??? - Moparts Forums

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Re: 15 x 7 or 15 x 8 with 255/60/15 tire??? #97268 07/31/08 10:59 PM 07/31/08 10:59 PM
Joined: Mar 2007 Posts: 2,230 restos just aren't my thing gtsuperbee top fuel
gtsuperbee top fuel Joined: Mar 2007 Posts: 2,230 restos just aren't my thing	I ran 215/70 15s on 15 x 6.5 rallys on the front and 255/60s on 15 x 7 rallys on the rear. It looked good, although I much prefer the 275/60 Restoring a car to look "only" as good as the factory made it is like getting a boob job for your wife and having the doctor make them two different sizes to seem more natural

Re: 15 x 7 or 15 x 8 with 255/60/15 tire??? [Re: gtsuperbee] #97269 08/01/08 12:13 PM 08/01/08 12:13 PM
Joined: Mar 2005 Posts: 2,060 Pendleton NY T terzmo top fuel
terzmo top fuel T Joined: Mar 2005 Posts: 2,060 Pendleton NY	I'm running 235/15/60's all around on My 67 GTX..7 inch rim...I'm going to 255/70/15's on the rear next as they are 29 inches tall. Also switching rearend to 391 from 355's and hoping to get same rpm's at same speed or closer. The other tires are only 26 inches tall...the 70 series will lower rpm at speed..save gas if not doing a rearend change. Tires are all BF goodrich radial T/A's My friend has a pro street dart with 33 inch tall tires on the rear..456 gears and turn around 3000 rpm at 60...and fantastic out of the hole

Re: 15 x 7 or 15 x 8 with 255/60/15 tire??? [Re: terzmo] #97270 08/01/08 02:03 PM 08/01/08 02:03 PM
Joined: Sep 2006 Posts: 1,169 Los Angeles, CA JF_Moparts super stock
JF_Moparts super stock Joined: Sep 2006 Posts: 1,169 Los Angeles, CA	I've run that size tire on both size rims, and the 8" width is better. The 7" resulted in a little bit too much bulge around the sidewalls for my taste. I push my car into the corners pretty hard and I wanted to reduce the little bit of rollover that you get with the tire. Jim

Re: 15 x 7 or 15 x 8 with 255/60/15 tire??? [Re: JF_Moparts] #97271 08/02/08 01:10 AM 08/02/08 01:10 AM
Joined: Aug 2007 Posts: 6,135 Valencia, España NachoRT74 master
NachoRT74 master Joined: Aug 2007 Posts: 6,135 Valencia, España	I have 255/60-15 on my stock iron wheels with hubcaps... I think they are 6"... no prob at all. but I was thinking upgrade to 7" or 8" anyway, not because some problems... so will keep watching for opinions too With a Charger born in Chrysler assembly plant in Valencia, Venezuela

Re: 15 x 7 or 15 x 8 with 255/60/15 tire??? [Re: NachoRT74] #97272 08/02/08 12:37 PM 08/02/08 12:37 PM
Joined: Mar 2005 Posts: 2,060 Pendleton NY T terzmo top fuel
terzmo top fuel T Joined: Mar 2005 Posts: 2,060 Pendleton NY	up to 255 a 7 inch rim is fine..I have 7 inch but would still like to go to an 8 inch

Re: 15 x 7 or 15 x 8 with 255/60/15 tire??? #97273 12/14/14 03:19 PM 12/14/14 03:19 PM
Joined: Jul 2014 Posts: 38 New Jersey M mrlee member
mrlee member M Joined: Jul 2014 Posts: 38 New Jersey	Quote: Quote: Quote: Consider running a 245 up front.235's leave alot of gap between the tire and fender unless you lower the front ride height. I've always been told that 235/60/15s were the biggest you could go on the front of an e-body. I've seen bigger tires used up front on b-bodys but just assumed they had more space up front. nope, not true. I run 245/60-15s on my cuda up front. 275/60-15s on 8" rims on the back. I used to have 7" rims but went with 8" after 20 years and the tires fit them much better. the lack of a trim ring bothers me a bit but I run the 7" rings so its not too bad Do you have 15 x 8's on the front too, or just the back? I'd like to see if 245/60/15 will fit on a 15 x 8 with 4-1/2" backspace on the front of my Challenger. If not, I will probably go 235/60 '70 Challenger R/T 383 F4 light green metallic Gator Grain top

Re: 15 x 7 or 15 x 8 with 255/60/15 tire??? [Re: mrlee] #97274 12/14/14 04:44 PM 12/14/14 04:44 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	I ran that exact combo on 15 x 7" copcar rims on my 87 Diplomat. I had to lower the pressure in the rears to allow the tire to wear evenly. It was a real fine line between too much and not enough pressure. Too much and the centers wore out, too little and the rear got wiggly. IIRC, I ran about 28 psi in the back vice the stock 35 psi. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

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