Ridetech Tru Turn/68 Camaro

[rgen19]

I realize this topic has been beaten to death but when laying out lots of money for forged wheels I want to be sure. My set up: stock subframe, stock height subframe bushings, ridetech strong arms/sway bar/tru turn with wilwood 12.19" brakes (.19 offset), Falken 265/35/18 tire and plan to run a 18x9 front rim. I've read numerous forums where Bret V has stated "5.5" bs with 275 tire on 18x9.5 rim with no mods required", I assume these numbers are based on the brakes having 0 offset? This info is great but of course my situation is slightly different. I did do a measurement and got 5.75" but I'm unable to verify by cycling steering or suspension. Anyone tried 265 tire, 9" rim and offset brakes?

[Whooppass]

ill be gong through this same thing. Following

[Josh@Ridetech]

With there being so many variables from car to car, brake kits to brake kits, and personal preferences it is really hard to pin down an exact backspacing number for every car. The 5.5" BS on the 9.5" wide wheel is the most common that we've seen, however (like you're saying), the brakes play a big factor in the equation. We have ran a 10" wide wheel (5.75" BS) with a 275 tire on the 48 Hour Camaro for years and seen many customers do the same. On that wide of a wheel, it normally takes some modification for clearance though. If you're measuring up for a 9" wheel, I would typically expect a little smaller BS number than a 5.75" but anything is possible depending on the parts you're using.

[67rally]

5.25" bs on a 9" wheel will put the wheel mounting surface in the same location as 5.5" bs on a 9.5" wheel, and same as 5.75" on a 10" wheel. It should just give you more clearance (equally) on the inside and outside of the setup.

18x9 w/5.25" bs is a very common size for the rear of a 1st gen Camaro (usually running a 275/35/18 or 275/40/18). I'd ask around and see if anyone you know is running an 18x9 rear and borrow it for the front mockup. If it will fit with a 275, you know you're good to go with a 265.

[glr0212]

I tried running a 6.25" BS on a 9.5" wheel with 265/35 tires

I went through a lot of heartburn and had to learn the hardway, so I will try to save you some of that by giving you my insight.

There is the long thread on the topic over on lateral-g. Ridetech got involved. There were a lot more pictures but like most threads the pics disappeared. I uploaded some of the missing pictures I had saved and added them to the first post.

http://lateral-g.net/forums/showthread.php4?t=44918

To summarize my thoughts on the tru-turn:

You will lose turning radius. A fairly significant amount

Stock 69 camaro turning radius is maybe 37 or 38' but for every 3 degrees of turning angle lost, you will lose about 4+ feet turning radius. And you can expect to lose at least 3 degrees and probably 6+ which means you will need 46' to make a u turn.

You can also expect to have your ride height fairly high. Don't expect the fender lip to be covering much of your front tire.

You will need to put in at least 1.5 camber

In my opinion, the tru-turn is a huge compromise. I would expect to have reduced turning radius and rubbing on the fender lips and/or increased ride height.

You are on the right track with backspace. you need 5.75" minimum, plus your brake hub offset. Even then, don't be surprised if it doesn't fit. I would recommend calling ridetech and finding an installer or finding a sponser that has installed the tru-turn before and get their opinion.

I bought my setup from frank at prodigy and he recommended 6.5" of backspacing. I got 6.25" and you can see where I was sitting in the picture below. If you really want a 275, you need an after market subframe. If that is not an option I recommend ordering 8"-9" wheels and running no larger than a 245 or maybe a 255.

https://static1.pt-content.com/images/pt/2017/10/RzQrSAF-1.jpg
https://static1.pt-content.com/images/pt/2017/10/wf3Afb9-1.jpg
https://static1.pt-content.com/images/pt/2017/10/8ZZQzf2-1.jpg



and here is a picture after with DSE subframe and 265s which is a much better fit, no rubbing so far, and no reduction in turning radius. Still waiting on things to settle and tweaking spring rates and ride height.



https://static1.pt-content.com/images/pt/2017/10/o3wuW18-1.jpg

[rickpaw]

The wheel well opening on 67/68 is very different on a 69. The 69 Camaro/Firebird has a somewhat squared off top opening, that creates less of a wheel opening. What works on a 68 may not work on a 69. It's best to do your own measurement.

[dhutton]

After reading about all the guys with problems I chose to run a 255 tire on a 18x8.5” wheel with Tru-Turn on a 69 Camaro. No rubbing.

I don’t think shooting for an extra .75” of tire is worth the aggravation most of these guys have had.

That said I have a 285 tire on an 18x10 wheel with an Art Morrison subframe on the other 69. It has Anvil fenders and inner fenders. The rear has 345 on a 19x12 wheel with minitubs and stretched quarters. I wanted to be certain there would be no rubbing...

Don

[TheJDMan]

I'm running a 275/35-18 on a 18x10 6.6"BS wheel up front with no fender or inner fender mods. I am also running a DSE subframe so not the same thing there but I can tell you that a 275 tire on a 10" wheel will work in the stock fender well.

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