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Old 04-20-2008, 04:32 AM   #1
DSP74
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Official E30 DSP Thread.

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Old 04-30-2008, 09:54 AM   #2
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Old 04-30-2008, 04:57 PM   #3
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Well to fit 285+ you can be ghetto like me and just go no flares and some fuel line and RTV to keep your hands and tires from catching edges....or you need to get a custom flare of some sort. The IE flares are pretty worthless, only give you about 2" at best.
I did look at taking a E46 fender and welding it in, probably could work okay.
As far as weight the difference between fiberglass and a metal fender isn't too much, so if you go that way do it more for easy of fitment or easy of production then weight. We aren't talking more then 2-3#s per fender.
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Old 04-30-2008, 06:40 PM   #4
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I'm not sure I can add much to this considering I run an Integra in DSP.

A hand made fiberglass flare seems to be the easiest way to go if you know how to do the work. And it would bolt right on instead of having to be welded. And you can make it as large as you want.
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Old 05-01-2008, 06:56 AM   #5
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Mmm

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Old 05-01-2008, 07:21 AM   #6
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^My only guess to that, is that most aren't looking to build a nationally competitive car. They just want to go out on the weekends and have some fun, drive the crap out their car and not worry about a speeding ticket or throwing it into the armco.
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Old 05-01-2008, 08:33 AM   #7
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The biggest reason (and I know because I'm not the only one) is because each 275 35 15 Hoosier costs $255.00 shipped. And the cheapest set of wheels is about $700.00. (no I'm not using Diamond for this set up)
And the fact that you only get 20-40 runs on them makes me not be able to afford them.
Totaling $1725.00 and a new set of tires mid season.
Just wheel and tire costs for a full season is around $2700.00.

I'm currently using 225 Kumho's . At a cost of $760.00 new. But getting more than a full season out of them. I was able to run the 225's on a set of wheels I already have.

Not to mention that some people have 2k just in their wheels.
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Old 05-01-2008, 08:37 AM   #8
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Quote:
Originally Posted by DSP74 View Post
OK first order of business fitting bigger tires.............

Custom built flares hand made.
Custom built combo of factory flare, and extra factory flare section from parts car.
E46 flares.
Custom built fiberglass flares.
Specially modified I/E flares.

What do y'all think?
I have some input on making flares from E46 fenders, because I recently did this to our E36 LS1 car. Lots of pictures showing the process are here. We used this car for inspiration (DSP E36 325is):


Left: Fenders cut (the rear wheelhouse/fender mods are the hardest part!) - Right: After bodywork and paint (18x10" + 285/30/18 V710 combo)

In all I probably have 15+ hours of fab work into our car's recent E46 steel flare mods + help from some friends during fitting/welding + bodywork done by an outside shop.







That's the front. We still had a LOT more work to do after that - lots of fender rolling, clearancing of the front bumper cover, then bodywork and paint. And the front was 3X easier than the back...

Doing proper flares to clear big tires (at full bump travel!) is a royal b!tch of a job. Proper flares tend to cost $2500-3000+ from what others in Street Prepared have told me they paid. I know I damn sure don't want to do another set like this! Of course it would have been a tiny bit less work if we weren't trying to clear 315mm tires on 11" wheels, but anything more than a 9" wheel is going to be some serious fab work on an E30.



Costs weren't that much, if I don't count my own time or others' labor.

EDIT: a cheaper solution is bolt on fiberglass fender flares. Of course you still have to clearance the rear unibody - which again, is the hardest part. Cutting multiple layers of steel, bending, rewelding them back together, etc. The fiberglass just covers up this butchery.



These were our previous monster-ghetto "carbon fiber" flares ($200 of China's finest fake carbon fiber flares made to fit a Nissan 240SX). No bodywork nor as much welding, but still a bunch of work to clearance the sheetmetal. They were fugly - functional-ugly.
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Old 05-01-2008, 08:48 AM   #9
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..........

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Old 05-01-2008, 08:51 AM   #10
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Is there a "secret source" for E46 fenders?
You bet there is.... http://certifit.com/

I paid $29 per fender. I was sticker shocked so I only bought 8.
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Old 05-01-2008, 08:55 AM   #11
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Old 05-01-2008, 09:38 AM   #12
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Granted I don't have these but this sounds WAY off. You should be able to get WAY more runs than that. Especially considering the weight of these cars.


Where are you sourcing wheels at $700/set. As that is not bad at all IMO.


I WISH THERE WAS A DEFINITIVE ANSWER TO WHAT IS FASTER. 285/30/18 OR 275/35/15


I wish it were way off. An EVO locally corded a set of Hoosiers in one day. Granted the car is heavier and on skinnier tires than the 275. But regardless, one set of Hoosiers wont last a full season. Specially if someone is looking for seat time with the newer 275.

The wheel is a 15x9 (too skinny but will work) made by 949 Racing. I was off on the price a bit. At 194.00 each.
http://www.949racing.com/index.asp?P...TS&Category=34

I'd say the 275 35 15 is the better way to go with the E30. It's lighter but just a tad skinnier. But I have no proof.

Edit, I admit I was going light on the upper end of run numbers. Some people are getting as many as 90 runs. Some as few as 20. The average seems to be a bout 45.
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Old 05-01-2008, 02:49 PM   #13
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Well with a V710 on a 285 I got about 150 runs before I junked them. The last 20-30 needing a lot of tire compound to revive them from another 3 runs.
There is no reason you can't get 80-90 runs out of a V710 assuming you aren't running on concrete all the time, and treating them properly (camber, not locking tires up on braking, etc).
The A6 is a lot better then the older Hoosier models, but I don't have first hand experaince with it. I just know I destroyed the edges in 6 runs one event on my Vette.

Oh and we held up a 275 vs the 285, they were nearly identicial in width, but you get a shorter tire on the 275 so a little less clearancing is required, and doesn't gear the car down as much. Plus you could always get a lightweight steel made for it at 150/wheel (tho I believe you need to use spacers up front if you do as they don't have a pattern that will clear the brakes).
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Old 05-01-2008, 07:56 PM   #14
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Granted I don't have these but this sounds WAY off. You should be able to get WAY more runs than that. Especially considering the weight of these cars.
Actually, that's about right. The 275/35R15s wear pretty fast. Make sure you flip them.
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Old 05-02-2008, 12:07 PM   #15
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