After looking at the JUN WRx in SUPER STREET magazine I was trying to figure, 245 or 255 on 18 inch, of course with lips rolled.

OPINIONS PLEASE !!!!

944TURBO GUY

I know the JUN car has 265-18's , but those fenders are seriously rolled, pushed and stretched, I dont want to go that far, just some mild rolling, to try and fit a 245/35-18 D.O.T. race rubber.
Yes, it'll be sprung very well,.........Prodrive makes a new rim that looks similar to the P1, except the lugs are recessed alot more, its a replica of the Ferrari Prodrive 550 GT racecar rim. 18X8 inch.

 

You dont need to go to 18's to fit 245's...

 

hey

245-255 on 17x8.5 should work w/out to much modifying. to do what jun did, you will as you said need some fender pulling. even then, the wheel travel will need to be reduced(lower bumpstops). wheel/tire combos that big are known to hit the inner fender unless you do some major interior fender work.

josh

 

Sorry guys, the one thing I left out was that I am going 18inch because I am upgrading the brakes to AP 6 piston, with a 14.5 inch rotor. This combo wont fit inside a 17 inch.

So it looks like I will have to do some fender work.( without getting into a "brake argument" about why I dont NEED brakes that big) .

So the jist of what I'm getting is that even with a 245 you need to modify the fender?

944 turbo guy

 

944

almost all the tuners in japan use 17's. they seem to be able to get enough braking from whatever they use with 17s. i know the jun car runs 18's, but that thing is ludicrous. not sure if you have the Impreza magazine that comes from japan, but there are tuners turning insanely fast lap times with 17s and 6 pot brakes.

one of the faser cars is the Zero Sport GDA. they use there own coilovers, and 17x9.5 advan RC II's. I think they use 255 yoko race rubber. but the fenders have been gutted, and cut to the edges. they also of course have 22mm front sway bar, 24mm rear, and all the bushings are STi.

anyhow, i am not sure what brakes you are goin for, but 18's on a wrx seems counter productive sometimes. but if you are trying to go for a car like the jun, than it is a moot point. that car must have about 1" of travel suspension wise, which is not why i would get the STi. i like the long travel suspension myself.

please let us know what you settle on parts wise. i am looking forward to seeing your car whe it is done.

josh

 

For the record, I am selling my 944 turbo racecar, that has 18x11 rear, with a 315-30-18 Pirelli D5 slick and 18x10 front with a 305-D4 slick, I run W6 wet slicks. All this I managed to fit under the stock fenders with alot of modifications. the car weighs 2350 and makes 385-400 hp @ the wheels.Track only car with Motons and Motec engine management. Max Crawford rear wing, Recaro Spg, Kelly Moss engine,..point is I have built racecars, and have now entertained the thought of building a "Jun" type car.

I am buying an STi for a daily driver and keeping my 03 WRx and maybe building a SCCA ITE or GT2 car, but it(2003 WRX) will start out as a 350hp 2800lb STREET-track car that I can drive to the track to instruct for drivers ed events, this will progress into a "trailer it" only car and be modified into ,..maybe a SPEED WORLD challenge car(GT) . BUT,...all this will depend on how fast a stock STI goes around my home track,..because, with 300ft lbs or torque and decent brakes, that lap time will tell a certain story.

I regularly run with a particular Speedvision team when they test there and can measure success from the lap times.

As for the brake kit,(the fronts 14.5 inch six piston AP are $ 4500.00 and rears, 13inch AP 4 piston calipers)$2800.00.
I run this setup on my racecar and other racecars I've built and it stops from 160 mph at the 175ft mark down to 40 mph for turn one at Summit Point,.so will I have brake over kill,..yes sir,..but the class I'll be in will have stupid power, and I'll have 4 wheel drive and stupid brakes.

Do I have to run 18inch,??? obviously no !! Do I want to,.?? yes, and so while I know this may turn into a $ 75k project, the two things I dont want to spend money on twice is brakes, and wheels. I will most likely go with a fikse or BBS racewheel for the racecar. If my fiance keeps the 03-WRX, then I will buy a Group N tub, to start the project.

Sooooooo,..this is why I am asking all the seemingly stupid, out of place questions about "fenders"..

Josh, thanks for the advise on the fender mods needed, I do need more info and pictures on some of the Japaneese magazines for the details.thanks for everyones help and opinions.

944 turbo guy(soon to be WRX GT guy)

 

Bel- pm me, if you get a chance , I'll give you my number ,.I need to talk to you about QS motorsports up in Conn. I also want to find more info on group N tubs.

944 turbo guy

 

255s sound about right for max. buy the way you have a buyer for the stock brakes yet I'm willing to take them on a prebuy

 

Last laptime before the Kelly Moss engine was a 1:20.2 on Hoosiers, with Big Reds and Hawk blue pads. Looking for much better with the AP's and slicks.

And yourself?

944tg