TTRS Wheels - any updates?

[mageus]

I know this has been addressed before, but . . .

Looking for the elusive 18" wheels to clear the calipers. I visited VMR today. Nice guys. Their 18" just barely scrapes the calipers at the barrel. Interestingly, deep concave spokes clear the calipers just fine and are not the problem.

Also, 9.5 width (ET 45) comes frighteningly close to the strut. The tire would definitely rub it. I also worried about rubbing the fender at that width. Unfortunately, VMR doesn't carry 9" width.

I plan to visit Forgestar to test fitment.

So,
- Has anyone found 18"-ers that fit?
- Can anyone confirm that 9" width with ET 45 doesn't rub? It's only 7mm further out than stock (assuming 255 tire and stock height).


----- UPDATE -----

I got Miro 111's, 18x8.5 ET35 with R-S3 255/35 rubber. Here you go:







Not quite poke, but they're pretty far out for my tastes. The gap you see is because the tire is 1" shorter than stock (thanx to the lack of a 255/40 offering from Hankook). But, I'm hoping this will save me from rubbing on hard cornering. Hey, maybe the shorter gearing will gain me 0.1 more second in 0-60!

I looked at the fender seam in the rear wheel wells. There's about 1cm that can be ground down without any impact on the seam strength.

Any comments, compliments, gagging?

[Black BeauTTy]

There have been a few posts of 18's that work, I'm sure the owners will chime in. There have been some on QW too.

[- Jeremy -]

My winter wheels are 18x8 ET35 and they fit perfectly with about 1cm clearance between the arms of the wheel and the caliper face. They also stick out about 5 mm farther than stock toward the fender and they don't rub. There's pretty much no way that an 18x8 ET45 would fit without hitting the caliper.

- Jeremy -

[DrDomm]

There's pretty much no way that an 18x8 ET45 would fit without hitting the caliper.

- Jeremy -

Spacer.

[mageus]

Looks like the usual suspects showed up to the party.

Jeremy, please remind me which 18's you have. The ones I looked at scrape at the barrel, not the spokes. As Domm said, rim clearance can be addressed by spacers.

I really, really don't want to settle for 19s. An R-S3 in 255-18 is $220. 225-19 is $330. That's +$400 per set for a worse track tire! (and less rubber, to boot)

An 18x9 ET45 that clears both the barrel and spokes would be perfect.

[tdi-bart]

new HRE wheels P40SC are out, i think lightest yet

http://www.6speedonline.com/forums/9...-pictures.html

[Marty]

Nobody makes an 18x9 +52 wheel that fits the TT?

[tdi-bart]

HRE will make you the R43, its a super light race wheel, i was considering it, but i decided 18's look too small on the mk2 TT

http://www.hrewheels.com/r43/

that wheel only comes in 18", but you can get any width, and offset you wish

18x9 weigh 19lbs

they also make the R40, mesh version

[Marty]

HRE will make you the R43, its a super light race wheel, i was considering it, but i decided 18's look too small on the mk2 TT

http://www.hrewheels.com/r43/

that wheel only comes in 18", but you can get any width, and offset you wish

18x9 weigh 19lbs

they also make the R40, mesh version

Those are insanely expensive for a track wheel (not to mention that they look pretty bad on that BMW, IMO).

Are any of the OEM 18" TT wheels 9" wide?

[mageus]

I'm gonna try to drop by Forgestar this week. They're iForge, but make those 'rolled' pseudo-forged wheels. They're quite light for cast wheels, and cheap too, at $1400 for a set. They make 18x9 at any ET up to 50 (they're made to order).

[- Jeremy -]

Looks like the usual suspects showed up to the party.

Jeremy, please remind me which 18's you have. The ones I looked at scrape at the barrel, not the spokes. As Domm said, rim clearance can be addressed by spacers.

I really, really don't want to settle for 19s. An R-S3 in 255-18 is $220. 225-19 is $330. That's +$400 per set for a worse track tire! (and less rubber, to boot)

An 18x9 ET45 that clears both the barrel and spokes would be perfect.

Ohhh... I understand now. Sorry, I just assumed that all 18" wheels had the same barrel inner diameter. I always figured that the spoke geometry would be more important than the barrel. That really sucks. I guess you're right about needing test fitments then. Hopefully the Forgestars fit. They're a good track wheel.

So, I'm not sure if I can be much help here. My wheels are German reps called Wheelworld WH11's. There's probably 7mm of clearance between the caliper and the arms and 5mm between the caliper and the barrel.

****ty cell phone images:







- Jeremy -

[- Jeremy -]

Those are insanely expensive for a track wheel (not to mention that they look pretty bad on that BMW, IMO).

Are any of the OEM 18" TT wheels 9" wide?

Yes, the OEM European TT-RS 18's are 18x9 ET52 and run 255's. Although, they're not very attractive.



- Jeremy -

[jamiekip]

Standard OEM 18"s are 245/40 18 not 255.
I run them as winters with the OEM 19"s (255/35 19) for summer

I have the RS4 B7 8 pot calipers squeezed behind too without issue



Note I have drilled discs now not slotted

[- Jeremy -]

Standard OEM 18"s are 245/40 18 not 255.
I run them as winters with the OEM 19"s (255/35 19) for summer

I have the RS4 B7 8 pot calipers squeezed behind too without issue

Damn, that is sexy, Jamie. But the OEM 18's are 18x9 ET52, correct?

- Jeremy -

[bigstu]

Can anyone confirm that 9" width with ET 45 doesn't rub? It's only 7mm further out than stock (assuming 255 tire and stock height).

I rub under hard cornering front and back, lowered on H&R springs, no spacers, stock 255/35/19 Toyo tires. Its gentle, nice rubbing, but it does rub. The front is rubbing on the plastic fender liner, and the rear is rubbing on the plastic fender/bumper clip. Many TT owners have ground down that bumper clip without issue, and I think that is going to be necessary with any setup that is more aggressive than stock.

[Black BeauTTy]

My P40's with et 50 are due in this week. I'll keep you all informed if there is any rubbing. I doubt the 2mm will cause any issues though.

[mageus]

Dropped by Bavarian Exclusive, in Brea, CA. Friendly guys. They tested a Miro 111 18x8.5 and it worked! Plenty of barrel clearance, much more than Jeremy's can-you-fit-an-index-card. ET 45 rubs at the spokes, but ET 35 clears in spades.

Only question is, will the ET 35 rub? It's about 3/4" closer to the fender, which is a little scary, especially if you hit a berm hard. Options are 255/35-18 which is 1" shorter diameter, or 245/40-18 which is similar diameter but only 1/2" closer to the fender. Or use the ET 45 with a 5mm spacer (not optimal for the track).


Still trying to get in with Forgestar to check fitment.

[- Jeremy -]

Dropped by Bavarian Exclusive, in Brea, CA. Friendly guys. They tested a Miro 111 18x8.5 and it worked! Plenty of barrel clearance, much more than Jeremy's can-you-fit-an-index-card. ET 45 rubs at the spokes, but ET 35 clears in spades.

Only question is, will the ET 35 rub? It's about 3/4" closer to the fender, which is a little scary, especially if you hit a berm hard. Options are 255/35-18 which is 1" shorter diameter, or 245/40-18 which is similar diameter but only 1/2" closer to the fender. Or use the ET 45 with a 5mm spacer (not optimal for the track).


Still trying to get in with Forgestar to check fitment.

Bah! I can fit three index cards in mine

Here's a really sloppy CAD drawing so you can visualize what you're deciding on:



Green: 19x9 ET52
Red: 18x8.5 ET35
Cyan: 255/35 R19
Magenta: 245/40 R18
Blue: 255/35 R18

You can see that the blue sticks out 17mm farther than the stock wheel, but is also 13mm shorter. The magenta is a bit better at only 12mm farther out and 4mm shorter. IMO, magenta is the safer option, but the blue is 1/2 inch shorter and that may prevent rubbing. It's too hard to say. One thing to consider is the diameter of the tire. Your speedo will read faster with a smaller tire. The 245/40 is only 1.2% faster than stock. The 255/35 R18 is 4% faster than stock.

http://www.1010tires.com/TireSizeCalculator.asp

Honestly, if the 18x9 Forgestar's fit the barrel and spokes around the brakes, I think having them make a custom offset is best. If they can fit around an ET50 or so, then you can get the R-S3's in either 265/35 or 265/40. A 255/40 R18 Pilot Super Sport would absolutely be your best option because it's the same diameter and width as stock.

http://www.tirerack.com/tires/tires....SSXL&tab=Sizes

EDIT: After reading Bigstu's comment, I definitely think your best bet is finding something in the ET50 range with the 255/40 PSS's. I'm really surprised that 19x9 ET45 rubs...

Here's another drawing showing how close the 255/40 R18 is to stock on an 18x9 ET52 wheel:



Magenta: 19x9 ET52
Blue: 18x9 ET52
Green: 255/35 R19
Red: 255/40 R18

- Jeremy -

[sr_erick]

Please see my response in the topic I started a while back, post #10.

http://forums.fourtitude.com/showthr...tions-that-FIT!

I found some that have worked excellent so far, and are extremely reasonably priced.

[mageus]

Jeremy, you are a true uber-geek.

I say this with the deepest respect. I've got spreadsheets full of offset data for every possible wheel/tire combination.

Yes, 255/40-18 is the same width as stock. Here's the issue:
- A quick survey of Fourtitude has people with 8.5"-45 and 9"-40 255 rubbing - and only with street driving.
- Per Tire Rack, R-S3 options are 245/40 & 255/35. No 255/40.
- R-S3 is supposed to be one of the widest tires around, so add a few mm
- Sorry, but this is a track tire. No pansy PSS here. R-S3 or bust.
- I doubt the Forgestars would fit at ET 50.
- This assumes the Forgestar barrels fit - they have a pretty thick lip in pictures.

Best option would be Forgestar 18x9 with 265/35 (assuming ET 45). This would put me 12mm+ out from stock, and be 1/2" shorter diameter than stock.

The Miro 18x8.5-45 with 5mm spacer (ET 40) and 255/35 also puts me 12+mm out, but with a 1" drop in radius which is safer. But at the expense of a smaller contact patch, and having to use a non-hub-centric spacer.
Miro 18x8.5 ET 35 would only be an option with 245/40 - even smaller contact patch, taller tire, but sans spacer.

I'm assuming Stu is running 10-20mm lower than stock. That equalizes my smaller diameter advantage. I think if I want a wider track, I'm going to have to get a shorter tire.

This stock ET 52 is driving me crazy!

Thanx for all the help, guys. We truly are forging new territory.


BTW, got the Conti DWS today. They ride soooo nice on the 19" stockers.

[mageus]

Please see my response in the topic I started a while back...

Looked at those. But I need an 8.5" wheel to get 255 rubber. Good to hear they are of decent quality, and look great to boot.

The Miro is a pressure cast wheel, which is theoretically stronger than gravity cast, which is likely what Alzor does.

[Marty]

Yes, the OEM European TT-RS 18's are 18x9 ET52 and run 255's. Although, they're not very attractive.



- Jeremy -

Do you know of any places that make decent replicas of the TT-RS 18's in the same width and offsets?

Nice wheel CAD by the way. Love it!

[mageus]

Spoke to Forgestar (iForge). They can't test fit wheels since their wheels are made to order. He guarantees me that the CF5 18" ET 47 will clear, since he's seen it on a TT with Brembo BBK.

Here are my options:

Miro 18x8.5 ET 40, 255/35 tire.
- I've confirmed fitment in person.
- 255/35 is 1" shorter than stock (diameter), giving more room for clearance.
- Available in a couple days with tires fitted.

Forgestar 18x9 ET 47, 265/35 tire.
- I haven't personally confirmed the fit
- 265/35 is 3/4" shorter than stock.
- Given the deeper offset, the 265's track is as wide as the Miro with 255 tire.
- Takes 6 weeks to manufacture and deliver.

So, the Forgestar will give me either more rubber with the same clearance, or more clearance with the same rubber. At the expense of not being 100% sure it will fit.




Any thoughts?

[JohnLZ7W]

A full inch is close to 4% off. Odometer and speedometer will be off quite a bit. Stance will probably look off too, not enough wheel and tire for a TT IMO

[mageus]

A full inch is close to 4% off. Odometer and speedometer will be off quite a bit. Stance will probably look off too, not enough wheel and tire for a TT IMO

Yes, but this is for the track only. Have GPS for accurate speed. Don't care too much about looks. May even gain a little acceleration at the expense of top speed, which is 170+ stock.

I definitely wouldn't recommend this for street wheels. 265/35-19 would be perfect for looks (only increases the radius by 1/6").

[R5T]

- Jeremy -

This is all wrong, wheels don't fit to anything.
They need to be black or silver.

[- Jeremy -]

This is all wrong, wheels don't fit to anything.
They need to be black or silver.

Yeah, I know. They're just winter wheels. They look like **** anyway

I'll get better wheels next winter.

- Jeremy -

[rodhotter]

just looking one day and found some nice + light quality J-Line wheels, custom built at a much lower price than most 2 pc forged wheels

[IPSA]

[/IMG][IMG][/IMG]

19x9 et50, no rubbing P40S, weight under 21lbs. Stock rubber.
Tried same wheel et 40, rubbed fender clips on moderate loading.

[Black BeauTTy]

[/IMG][IMG][/IMG]

19x9 et50, no rubbing P40S, weight under 21lbs. Stock rubber.
Tried same wheel et 40, rubbed fender clips on moderate loading.

Sister HRE wheels...P40 same size (19x9 et50), brushed tinted clear...

[IPSA]

Looks a little cooler in your neck of the woods.

Gotta luv P40s in any form...

[Black BeauTTy]

No doubt! Although our winter has been great this year.

[YYC Dubber]

Sister HRE wheels...P40 same size (19x9 et50), brushed tinted clear...

nice p40's.... but do I spy with my little eye that u painted the side mirrors black? By your silver outer grill frame means u didn't spring for the titanium pack/ cf mirrors ...

[AppleChilli]

^^^they're CF

[Black BeauTTy]

^^^they're CF

Yeah, what he said. No Ti pac, but CF mirrors.