clifhanger87

iTrader: (4)

so i really want to run the 285/35/18 Hankook RS3 for autocross, but i can't quite find the right wheel for it. i know i need an 18x10 but i just can't find one with the right offset, spoke clearance and price. i only want to spend right around a grand.
i'm running in ASP and our club gives a .975 street tire pax advantage. this also needs to be stock body. no widebody.

Adam Brunson

I would actually run a 10.5" wheel, but that is just me. (285 / 25.4 = 11.22 - 10.5 = .72 / 2 = .36") Something around the lower 20's for offset.

Maybe Enkei NT03+M part number: 36581056530SP, 18x10.5, 30ET, 21.0lbs, you should be able to run this wheel with a minimal spacer up front.

clifhanger87

iTrader: (4)

would those clear stock fenders (rolled obviously) with 285 tires?

Adam Brunson

What suspension are you running?

clifhanger87

iTrader: (4)

apexi n1 coilovers with 8k front springs and 10k rear.

grahamab

iTrader: (10)

have fun fitting 285/35's on a stock body. 285/30's aren't too bad since they're shorter (and tons of autocrossers have known setups that work), but I think 285/35's are a lot of work.

Graphic

iTrader: (13)

I'm going to be running this size tire and rim. I am most likely going to buy Rota G-Forces. I wouldn't go below a +35 offset on a 10inch rim. Honestly +38 is more like the sweet spot. The wider the rim the higher the offset you need to go. A +20 offset is going to fit like ***. You're never going to get a 285 on there with that offset. It's going to rub bad.

You need custom rear end links - R/T Ernie makes a set that will allow you to run a wide rim.
-Note: If you do not have a custom rear trailing link I think the max you can go is around 265-275maybe and really depending on the tire choice.

You need to be between +35-+40 offset +38 I think is the best size.

You will also need to use a 15-20mm spacer up front.

You can get all this to fit with out rubbing issues. The rears need only a minor fender roll and the fronts need to be rolled. Go look up R/T Ernie's info on this.

I will most likely be running a 285 and stepping up to a 295 or 305. This can be done if you take your time and get the right stuff.

Adam Brunson

I made a typo and put lower 20's, when I meant lower 30's, hence why I suggested ET30 wheel..

I didn't realize you wanted it to all fit on stock body when I first saw your post, but after seeing your second post and the suspension your running.. Your going to need a good amount of camber, and not going to get the car as low as you would want.

I run a 10" wheel with 255 tires and has to roll a little bit. I don't roll slammed either.

clifhanger87

iTrader: (4)

i definitely don't roll slammed either. it's a functional auto-x car. i eventually want to upgrade to muellerized ohlins, but not at this time. my main goal right now is finding less expensive alternatives to the rpf1 or nt03, which is looking like i'm not going to.

Construct

iTrader: (4)

You're exactly right, you probably won't find anything cheaper than the RPF1 or NT03 that you'll actually want to own. The RPF1 is right at the sweet spot for bang for your buck.

Adam Brunson

Unless you want to rock some steelies from Diamond Racing or Bassett, you might me SOL.

Look into some Rota's.

Graphic

iTrader: (13)

+30-+32 on a 10" rim is like a +20 on a 9. I wouldn't go that low on a 10" rim. I don't like the sound of tires rubbing or anything like that, it bothers me. Which is why at all costs, I will avoid an offset that low.

Also I forgot to mention you need a 6" spring or be able to set your preload to 6 inches so you can clear the rim/tire.

Neal@tirerack

iTrader: (25)

I'd go 10 or 10.5", the tires are good fro 9.5 - 11". Get your fender lip roller ready!

03whitegsr

iTrader: (8)

Why would you want to run the 285 in that tire? The 275/35/18 has a thread width of 10.2" where the 285 is 0.1" more narrow at 10.1".

More importantly though, the 275 is 0.3" shorter then the 285, which will help with fitment. The biggest problem you'll have with fitment is running the tire into the rear of the wheel well and side skirt while turning and a larger diameter will only make this worse.

As far as offset, personal opinion, a 9.5" x 22mm offset puts the wheel face about perfect with a pulled fender. That would mean ~+34 offset on a 10.5" wheel. Not sure what wheels out there clear the Brembos in 10.5" with that kind of offset though. Also, you are pushing the inside of the wheel towards the strut with that offset so you'll have to balance the camber adjustment ont he strut with wheel clearance and then use camber plates to get your desired camber angle.

Graphic

iTrader: (13)

I would be more concerned about rubbing the rear end link. You don't need to pull and destroy your car to get a +35-+38.

If the OP is racing his car I would hope or assume he has camber plates.