Sweet! Thanks for the help!






I still want coilovers though...

 

Some great info here. Thanks to all that took the time to post up their firsthand input - you've saved me some money. I'm convinced that, for my needs, I won't be losing much if anything by going with the Pedders springs over the coilovers.

 

1 mad blueberry or whatever in NC has a 4 dr turbo I think pedders would be a natural for that beast...OTT have them in stock

 

I just wanna go out on a limb and say: No way in hell youre gonna safely run a 275 tire

A sticky 245 is A LOT of tire for a Cobalt, even if you could fit more, you really couldnt use it. Besides rubbing and possibly lack of full steering angle youre gonna run into your power steering not being able to turn the wheels and derating. Lets also not forget how heavy a 275/35-18 is gonna be, just shy of 30lbs per tire, so youve got a heavier wheel and a heavier tire, and potentially less ability to use the tires extra contact area, sounds like a losing proposition to me, Id stick with a good sticky 245 as a max for a tire.

 

Just to be completely accurate: a Hoosier A6 275/30 x 18 is 23 lbs, a 285/30 x 18 is 24 lbs and the 18" wheels most of us can afford are in the 25 lb range. Pretty weighty...

While agreeing with everything said about a 'stock' Cobalt running 245s, I routinely use 285/30 x 18 A6s with good success autocrossing and I have no rubbing problems (now, there was a lot of 'massaging' and I'm on Ground Control coilovers over Konis with very, very stiff springs) and I get lock-to-lock without problems. But sitting still and turning the steering wheel is very difficult (sometimes all but impossible), but while moving I've had no problems to date. Doesn't mean there won't be problems at some future time.

A time attack car is different from an SCCA Koni Challenge car is different from an autocross car is different from a salt flats racer is different from a drag racer... Each has unique challenges and unique configurations -- no one solution is the only solution.

Scott

 

Qwik those CCW's make you my HERO....no homo

 

Thanks for the input Maven, I always look forward to reading your posts. I would like to run 275's simply for the fact i would be stuck in a street tire class. Regarding the weight though... if I drop the wheel weight 10 lbs per wheel, I could afford to pick it up on the tire weight. Of course, this would take alot of consideration with power to weight and all that. It was just an idea. More of a dream really.

 

You're not running a 275 on a cobalt without some major flaring.

Reason why Maven has said 245s are about it:

He's ran em.

So have I.

They rub.

 

Yeah, I planned on flaring the fenders. No worries, I am running 245's now, and they rub, so I have put thought into it, believe it or not.

 

Well dropping wheel weight in order to offset for the heavier 275 street tires is a great idea, the problem is that your average 275 street tires weighs 29-30lbs, a solid 5-6lbs heavier than a good 245 street tire. So you need to drop at least 6lbs, preferably more, right?

Well last I remember hearing was that TC wheels weigh 24lbs, a 6lbs drop would get you to 18lbs (your 10lb goal, while awesome would be a featherweight 14lbs!)

So no you need a 9.5" wide wheel that weighs a max of 18lbs...Thats gonna be tough AND expensive. OZ Allageritas in 18x9 are just a few ounces shy of 20lbs, but dont come in our bolt pattern, RPF1s are around 18.5lbs for 8.5" but also dont come in our pattern, theres very few options out there that arent gonna run you thousands of dollars for a set of wheels. and the ones there are would require a hub swap If youre in a street tire class, and your car is a street car, or worse, your daily driver.....I just dont see how it could be worth it.

Dont know exactly what racing your doing, but maybe consider forgoing some of your mods and running in a lower class where you can run any tire you want in a stock size.

 

Thanks for helping me think that through. I had hopes of getting the Enkei PF01's, but now it looks like I am stuck drag racing just for travel issues, since there are no road courses nearby

Also, I was just throwing 10lbs out there... thought i had heard our wheels weighed 28lbs... thanks for the info though.

 

Well, my stock wheels with TPMS, 225/40/18 KDW-II weigh 44 lbs.

Tire Rack says das tire weighs 23 lbs.

 

I am that tester...
I ordered them early October. Ordered the full setup. XA coilovers with camber plates and pillowball mounts, powergrid endlinks, and a rear OTTP steet bar.
At the time, all OTTP had was purple bars, but a new batch was supposed to go into production two weeks or so after I ordered, which was no problem for me since I was mid system build. After some waiting, I found that OTTP had some troubles getting the materials for the new bars, but they were ready for paint and were shipped out. Then the painter went on vacation or something and was AWOL. That is where the current situation stands to my knowledge. I am hoping that the bar is done now. If it is not, my last day of school is tomorrow, and I will just do the install with no bar. I did not want to do the whole project in separate times, but I think I should soon since production is dependent on me.
I have access to a lift, so the install is no problem. I just didn't want to need to align it more than once. However, a friend of mine has the same setup on his GTO and it rides golden. Its a Caddy on setting 1 and a roller coaster on 30.

Sorry for the delay is the fitting. No fault to OTTP. Mostly on me for wanting to do it all at once, and being so busy with working at a pharmacy, helping run three companies, and various other projects, but hopefully you understand. Now that winter is here and school and outside projects are done, I should have more free time.


However, I can say that they look amazing!

 

I woulda had those bitches on 2hrs after I received them, but i wasnt willing to pay mcuh for them.

 

I didn't pay much for them...