275/60/15 MT ET streets trim quarter panel - Team Camaro Tech
Wheels & Tires What fits what?

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post #1 of 16 (permalink) Old Dec 8th, 12, 06:54 PM Thread Starter
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275/60/15 MT ET streets trim quarter panel

hey guys i just mounted a set of mickey thompson 275/60/15's ET street radials on 15x8 4.5in backspacing rim.

I cant believe how tight the fit is. The very top of the quarter will probably need to be trimmed to fit these big meats.

drivers side i can fit my index finger between the tire and the rear quarter lip, the passenger side i can barely fit my index finger; its tighter.

any tips to remedy this?? i was thinking about taking a dremel to the top lip. ( i have aftermarket quarters - (supposedly bigger lip than stock).

anyone else running this size; i also have 1.5in hotchkis drop springs which i believe contribute to the problem.
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post #2 of 16 (permalink) Old Dec 8th, 12, 07:03 PM
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Bob
 
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Re: 275/60/15 MT ET streets trim quarter panel

How's the inside look? You may be able to go with 5" or 5.5" back spacing and get them to fit, provided you've got clearance to the inner wheel well and to your shock mounts.
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post #3 of 16 (permalink) Old Dec 8th, 12, 07:25 PM
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Art
 
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Re: 275/60/15 MT ET streets trim quarter panel

I have the 275-60 MTs on 15x8 Telstars with 5" Backspace. Fit perfect with no trimming required. I had them on my 68, they are on my 67 until I start the minitub surgery...

Artie

67 Camaro
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Previous:
67 Camaro Traded for my 98
68 Camaro Street/Strip
98 Camaro Race car Best ET 9.08 @ 152 1.18 60'

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post #4 of 16 (permalink) Old Dec 8th, 12, 07:31 PM Thread Starter
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Re: 275/60/15 MT ET streets trim quarter panel

SRGN: but was your car lowered???


it looks like i have 1.5 inches on the drivers side and maybe 1in on the passenger. (i am speaking about inside clearance.)

i was told that 4.5in backspacing would be perfect for this combo; guess not.

i may have to buy wheels with 5 in backspacing as you said??...
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post #5 of 16 (permalink) Old Dec 8th, 12, 07:51 PM Thread Starter
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Re: 275/60/15 MT ET streets trim quarter panel

or..... i hate to say it...air shocks....
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post #6 of 16 (permalink) Old Dec 8th, 12, 07:52 PM
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Randy
 
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Re: 275/60/15 MT ET streets trim quarter panel

I am also running 275/60/15 on a 15x8 with 4.5" BS no tire rub at all. I have a 8.5" 10 bolt out of a 72 nova, with caltrac split mono springs. The rearend has multi leaf perches, so I used the calvert spacer block they offer, one below and one on top of mono leaf.

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post #7 of 16 (permalink) Old Dec 8th, 12, 08:08 PM
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Art
 
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Re: 275/60/15 MT ET streets trim quarter panel

My 68 was dropped a little bit with shorter shackles and mono leafs. My 67 is probably higher than stock right now as I have everything out including the drivetrain to get ready for the build. If you were closer I'd let you try them out to see how they fit.

Artie

67 Camaro
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Previous:
67 Camaro Traded for my 98
68 Camaro Street/Strip
98 Camaro Race car Best ET 9.08 @ 152 1.18 60'

Dyno sheets don't win races, see you at the track
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post #8 of 16 (permalink) Old Dec 8th, 12, 09:18 PM
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Re: 275/60/15 MT ET streets trim quarter panel

I had the same tires on a set of same dimension wheels with stock ride height and they fit great. Not sure why yours don't. Is ride height lower? Are the leafs sagging? Seems you have an issue there. As someone said below, last resort might be a set of air shocks.


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post #9 of 16 (permalink) Old Dec 8th, 12, 09:21 PM Thread Starter
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Re: 275/60/15 MT ET streets trim quarter panel

Yes my car is lowered with 1.5in drop hotchkis springs.
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post #10 of 16 (permalink) Old Dec 9th, 12, 10:35 AM
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mike
 
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Re: 275/60/15 MT ET streets trim quarter panel

I have the same set up with the same problem(tires springs back space etc). Except my rub side is the drivers side. I tried to roll in the well it helped a little but did not solve it. I installed air shocks lol. I also installed the kit that you can hit a switch and pump them up when needed. For the most part I only get a rub now and then. If I am going on what I know to be a bumpy road where it would rub a lot I pump them up Or if someone is going to sit in the back seat. I have old cragars and can not afford to swap them out. Maybe when bucks come in I will change to 5" back space.
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post #11 of 16 (permalink) Old Dec 9th, 12, 11:41 AM Thread Starter
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Re: 275/60/15 MT ET streets trim quarter panel

i do not believe 5in backpsacing would fix the problem. it looks like i only have 0.5 to 0.75in clearance from tire to inside trunk pan.

i believe this combo is too radical unless you are running airshocks. i may install a set just to run the tire combination. The only issue is air shocks have no place on a pro touring car hah.
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post #12 of 16 (permalink) Old Dec 9th, 12, 01:27 PM
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Art
 
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Re: 275/60/15 MT ET streets trim quarter panel

The only thing I can say with absolute certainty is that these cars differ a lot with clearances in the wells. With aftermarket quarters, and not being sure which side of the tolerance they were installed to, your car may have less clearance than some of the other cars out there. My 68 had OEM quarters on it, my 67 has aftermarket ones installed. If your shackle bushings are worn, this could be hurting you too by allowing excessive lateral movement or even causing the rear end to be shifted slightly to one side. I wouldn't put air shocks on, I hate the ride with them but that's just me. You could also use a longer shackle to raise the rear without hurting ride quality as much.

Artie

67 Camaro
99 T/A Daily Driver

Previous:
67 Camaro Traded for my 98
68 Camaro Street/Strip
98 Camaro Race car Best ET 9.08 @ 152 1.18 60'

Dyno sheets don't win races, see you at the track
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post #13 of 16 (permalink) Old Dec 9th, 12, 04:22 PM
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mike
 
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Re: 275/60/15 MT ET streets trim quarter panel

Actually the ride with my air shocks did not make much of a difference with the lowering springs and with the hooker super comps loving to scrape the ground whenever they can it helps to raise it up quick(like when backing out of a driveway with a steep entry). I like having the pump to pump them up at will from the drivers seat and you can lower them too. Hey it works for me anyway. If I have 2 200 lb passengers in the back seat it helps a lot.
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post #14 of 16 (permalink) Old Oct 2nd, 13, 04:28 PM Thread Starter
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Re: 275/60/15 MT ET streets trim quarter panel

So guys I sold my 275/60/15 15x8 setup as it would not fit!

I want to put drag radials in the rear. I will so the same 15x8 with 4.5in bs but should I go with 255/60/15 or 235/60/15?
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post #15 of 16 (permalink) Old Oct 2nd, 13, 10:01 PM
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Re: 275/60/15 MT ET streets trim quarter panel

After reading all that, I still can't figure out what year your car is ??

I think a 255 will work on a 67 or 68. Doubtful on a a 69.

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