245 45 x 17 or 235 40 x 17 on front - Team Camaro Tech
Wheels & Tires What fits what?

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post #1 of 16 (permalink) Old Sep 21st, 03, 04:18 AM Thread Starter
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Help I know I have to do 255 40 x 17 in the rear but in the Camaro performers mags I have it sure seems their are alot of lowered 1st gens running 245 45's x 17 up front how are they doing this? I always thought 235 45 was max? I also see alot of 275 40 x 17 on the rear wont they rub?
What got my atention is that they were first gens that were lowered 2 inches up front, or running full Hotchkis suspensions like I'am.
I do have my wheels now they are a 17 x 8 with 4.5 bs up front and a 17 x 9 with a 5.0 bs for the rears.
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post #2 of 16 (permalink) Old Sep 21st, 03, 04:33 AM
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I'm interested in this question also. I don't want to have to settle for 255's in the rear, but I hate rubbing. I just want to be sure before I buy. Thanks in advance for answers.


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post #3 of 16 (permalink) Old Sep 21st, 03, 11:23 AM Thread Starter
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John,
Thats the way I feel I hate rubbing but I hate skinny tires too! I want the fattest widest I can squeeze in. I see that most of the modified Camaros in Camaro Perfomers mag have 245's up front but I've been told I can only go 235? I also see lots of 275's in the rear, I wonder what mods they have done. If all else fails there is always the 235 and 255's that I know are fail safe.
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post #4 of 16 (permalink) Old Sep 21st, 03, 01:00 PM
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I tried to put 245/45's on the front. I didn't know it at the time but I had bad body bushings. On the pass side they were gone completely and that was the side with fitment problems. The driver side bushings were still intact. I feel that 245/45's front and 275/40 (ideal sidewall match) will work, Stielow and Tucker I believe have both been quoted as saying those sizes are the biggest tires you can stick under a stock body '69 Camaro.

What I believe has to happen is for them to not rub at all is your suspension has to be perfect (completly rebuilt front and rear), perfect body bushings and with a ragtop maybe something to stiffen the side to side twisting you get when the car goes through a driveway at an angle. I also believe how low your car is and what you carry in it makes a difference. If you never load the trunk and put 4 passangers in it you may not ever notice a rub. I could have run the 275's on the back of my ragtop but would have had to trim or roll the fender lip.

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post #5 of 16 (permalink) Old Sep 21st, 03, 01:08 PM Thread Starter
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Dennis,
So what your saying I can get away with 275's since I have rebuilt my whole suspension? The body mounts are new also (poly). Also will I have problems with 275's with only 5.00" bs? I have rear discs if that makes a fifference. [img]graemlins/clonk.gif[/img] I do carry 4 people but I dont fill the trunk also. I have Global West sub connectors. Or should I just stick with the 255's? What Aspect Ratio do I want on the 255's or 275's? And what Aspect do I want up front on the 245's or 235's?
Thanks Your a life saver,
Mike

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post #6 of 16 (permalink) Old Sep 21st, 03, 06:09 PM
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I couldn't agree with you more. I DEFINITELY want the widest fattest tire possible! This is encouraging, because I want to run the 275's in the rear. I'm willing to trim the lip and maybe even cut and reweld the inner fender, but I want to know that the finished product will work. There are times I fill the car up...so I have to keep that in mind. We'll see. Keep the info coming! Thanks.
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post #7 of 16 (permalink) Old Sep 21st, 03, 08:32 PM
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I run 275/40 17s and 245/45 17s on my 69 convertible without any problems or need for clearance modifications. My car is lower than stock, but not as low as some. The distance from the front fenderlip to the center of the front wheel is approx 13.75".

The rears have never rubbed, although I usually dont't have rear passengers. When the 275/40 17s wear out, I am going to try 285/40 17s. These should be less than a quarter inch wider on each side, and I will trim the fenderlip and/or massage the inside wheelwell slightly with a hammer if the bigger tires rub.
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post #8 of 16 (permalink) Old Sep 21st, 03, 09:14 PM
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My 69, What are your rim widths and backspaces? Thanks.
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post #9 of 16 (permalink) Old Sep 22nd, 03, 10:15 AM
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Fronts are 17x8" with 4.75" backspacing.

Backs are 17x9.5". I had custom ordered 5 1/4" backspacing, but they came in at 5 1/8", and fit fine and have never rubbed.

This is with drum brakes all around. I did notice that the frame on one side had a little paint rub from when the front wheels are turned full lock. Although this was so slight that it wasnt noticeable while driving, the disc brake conversion I am putting on should eliminate it, since the discs will push the wheel out approximately a 1/4 inch further than the drums.
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post #10 of 16 (permalink) Old Sep 22nd, 03, 10:36 AM
 
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I'll 2nd that. 245/45/17's on the front of mine as well. 4.75" of BS, and the only time I've rubbed is when entering an off camber driveway. Also, just an FYI, I'm also runnning 275/40/17 in the rear without any problems. Although 335/30/18's are coming soon...
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post #11 of 16 (permalink) Old Sep 22nd, 03, 01:59 PM
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I just replaced my total suspension including frame bushings and I have 275 40 17 on a 17x 9.5 with 5.5BS and 245 45 17 on a 17x8 4.75 BS. If i had to do it over again i would go with smaller sizes. i don't rub in the front only at full lock and that doesn't really bother me, but the back are very annoying and rub on the inside. i have put 3/8 spacers but I still get rubbing and I will have to modify the outside fender lip and inner fender to make it fit. The drawback is I wasn't able to lower the car to the extent i wanted to because of tire selection. I am considering a 255 but that tire is not available in the yokohama that i have so i will have to change all four tires.
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post #12 of 16 (permalink) Old Sep 22nd, 03, 02:08 PM
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I havent had any rubbing with the 275/40 17s on my 69...maybe there is a little more space inside the rear of a 69 compared to 67-68. In addition, I think every chassis is a little different after 30+ years out on the road.
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post #13 of 16 (permalink) Old Sep 22nd, 03, 04:34 PM Thread Starter
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How many of you guys with 275's are running rear disc's? I know that will put your tires out a little further?
Mike

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post #14 of 16 (permalink) Old Sep 23rd, 03, 04:58 AM
 
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I'm running Baer all the way around. The rotor adds .200" per side.
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post #15 of 16 (permalink) Old Sep 23rd, 03, 05:09 PM
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I'm running drums all around for now with spacers, will be going to discs soon.
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