Tires for 17" TT 2s - Team Camaro Tech
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post #1 of 8 (permalink) Old May 31st, 07, 05:04 PM Thread Starter
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Tires for 17" TT 2s

I am getting ready for the power tour and have a set of 17 x 7 with 4" bs and 17x8 also with 4" bs.T he tires are 245/45/17s front and rear. I would like a slightly taller tire on the rear. Should I go with a 255/50/17 on the rear?How about a 255/45/17? Need help quick! Need to get them right away . By the the way this is for a 67 RS.

Last edited by 67sprtcp; May 31st, 07 at 06:22 PM. Reason: delete
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post #2 of 8 (permalink) Old Jun 1st, 07, 10:12 PM
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Re: Tires for 17" TT 2s

I would go with the P255/45/17. Here is why and I will use my car for an example. I have P235/60R15 all the way around. That size is pretty close to what the factory used on First Gen's. P235/60/R15 was also used to replace P215/65/R15's on 1982-1987 Z28's and 1985-1990 IROC-Z's with 15" wheels.

Ok so now lets compare overall diameter shall we

P255/50/R17 = 27.03 Inches
P255/45/R17 = 26.03 Inches
P235/60R15 = 26.10 Inches

As you can see the P255/45/R17 is very close to what I have in diameter. That should clear based on what you have. I believe the standard backspacing on my 15x7 Rally's is 4.25" Most places will try to sell you a Z speed rating or higher. Unless your are trying to keep up with F1 Ferrari's or Indy Cars you don't need Z speed rating. The first or or second gen Camaro was never designed with that type of suspension. All you need is an S or T speed rating and you will be fine. But in a 17" tire it's usally H or better. The higher the speed rating the stiffer the sidewall which generally will improve your handling. Be careful though Z Rated tires never were known much for wet traction. Now the highest speed rating is Y. If you like the Power Tour and want a 17" tire and one that should clear--- Go with an H speed rated P255/45/17. Most places want to sell you the highest speed rating in a first or second gen. A 1967 RS or 1969 RS are not 1989 1LE IROC-Z's. They are not ZR1 Corvette's or Z06 Corvette's. High Speed Radials cost alot of money. Here is a cool link on tire speed ratings. http://www.tirerack.com/tires/tirete....jsp?techid=35

The rest below I copied & pasted from this website. Cool tuff as you can compare tire sizes. Here is the link. Just eneter what you have or want. http://www.1010tires.com/TireSizeCal...?action=submit


Stock Tire >Search Tires Tire 1 - 255/50R17 >Search Tires Tire 2 - 255/45R17 >Search Tires Tire 3 - 235/60R15 >Search Tires
Section Width: - -
Section Width: 10.03 in 255 mm
Section Width: 10.03 in 255 mm
Section Width: 9.25 in 235 mm

Rim Diameter: - -
Rim Diameter: 17 in 431.8 mm
Rim Diameter: 17 in 431.8 mm
Rim Diameter: 15 in 381 mm

Rim Width Range:
Rim Width Range: 7 - 9 in
Rim Width Range: 8 - 9.5 in
Rim Width Range: 6.5 - 8.5 in

Overall Diameter: - -
Overall Diameter: 27.03 in 686.56 mm
Overall Diameter: 26.03 in 661.16 mm
Overall Diameter: 26.10 in 662.94 mm

Sidewall Height: - -
Sidewall Height: 5.01 in 127.25 mm
Sidewall Height: 4.51 in 114.55 mm
Sidewall Height: 5.55 in 140.97 mm

Radius: - -
Radius: 13.51 in 343.15 mm
Radius: 13.01 in 330.45 mm
Radius: 13.05 in 331.47 mm

Circumference: - -
Circumference: 84.91 in 2156.7 mm
Circumference: 81.77 in 2076.9 mm
Circumference: 81.99 in 2082.5 mm

Revs per Mile: -
Revs per Mile: 769.5
Revs per Mile: 799.0
Revs per Mile: 796.9

Speedometer1: mph km/h
Speedometer1: mph km/h
Speedometer1: mph km/h

Speedometer Difference: % Speedometer Difference: % Speedometer Difference: %
Diameter Difference: % Diameter Difference: % Diameter Difference: %


Good Luck!!

1) 1969 Camaro RS 396 TH 400, 12 bolt 3:73 sold 1994
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2) 1984 Z28, 5.0 H.O. T-Tops, G92 3:73, sold 1994
3) 1988 5.7L IROC-Z, sold 1994
4) 1969 Camaro bought 2006, back on the road in 2010
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Last edited by South Side Goons & Hitmen; Jun 1st, 07 at 10:39 PM.
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post #3 of 8 (permalink) Old Jun 2nd, 07, 11:13 AM Thread Starter
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Talking Re: Tires for 17" TT 2s

I also have 15x7 rallys with 235/60/15 tires front and rear. I may put them back on because the ride is much better.I dont enjoy driving my car when it shakes everything loose. We have bad roads in Ms.
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post #4 of 8 (permalink) Old Jun 2nd, 07, 11:17 AM Thread Starter
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Cool Re: Tires for 17" TT 2s

Thanks for the info. Just dont think Im sold on 17" wheels for my 67.Love the looks, hate the ride . Got to be hard on ball joints , tie rods ,etc.
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post #5 of 8 (permalink) Old Jun 2nd, 07, 09:36 PM
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Re: Tires for 17" TT 2s

Yes, the real low profile skinny tires that are way to small for the car would eat ball joint & tires This was real common when kids would put P205/50/R15 on a 4x4 Chevy Blazer from the late 1980's or early 1990's that came with P235/75/R15 from the factory.

You will like the ride quality of the P235/60R15. If you are not sold on 17's, that is what I would go with (P235/60/R15)

P.S. The roads in Chicago & The surrounding Suburbs $*ck as well.

1) 1969 Camaro RS 396 TH 400, 12 bolt 3:73 sold 1994
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2) 1984 Z28, 5.0 H.O. T-Tops, G92 3:73, sold 1994
3) 1988 5.7L IROC-Z, sold 1994
4) 1969 Camaro bought 2006, back on the road in 2010
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
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post #6 of 8 (permalink) Old Jun 4th, 07, 06:42 PM Thread Starter
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Talking Re: Tires for 17" TT 2s

Put the rallys back on today with a new set of BFGs , 235/60 front 245/60 rear. Drives great. Putting the 17s on hold for now.
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post #7 of 8 (permalink) Old Jun 5th, 07, 12:57 AM
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Re: Tires for 17" TT 2s

when ever you decide that you do want the 17" you need to get them with more than 4" of backspacing
and if I had a vote I would go with 17" the ride is not bad, you still have a 40 series tire, plenty of rubber
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post #8 of 8 (permalink) Old Jun 5th, 07, 02:46 PM Thread Starter
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Re: Tires for 17" TT 2s

Thanks. 4" front and 4 3/4 rear is what american racing recomends. I will refer back to this site also. Good info.
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