Search:

Matching tire size would be 255/25/21

Will be very harsh, you've been warned! Also, see other threads about fitment of 9.5" wide wheels, you're going to need to grind the casting nub on the...

Yes, you will need an adapter for those wheels, or they will vibrate like crazy and probably toast your wheel bearings.

57.1mm to 66.6mm adapters have been discussed a couple of times here, and...

255/35 is a closer match to stock rolling diameter, but 265/35/19 only throws speedo off by 1%. Without spacers the inner lip of the rim is ~1/4" closer to the suspension. You're gaining about 4%...

Sounds perfect, don't forget to take pics for us!

O_E

This changes the wheel placement very slightly. The inner and outer lips of the wheels will each be 1/4" further out from the wheel hub (meaning 1/4" less clearance to the strut) - If you can find...

Only on RS6.com would someone title the picture "RS6 Garage" when there's a red Ferrari hanging out in the background next bay over. She looks mean as hell and very well-finished! Very tastefully...

Very nice! Very reminiscent of my winter wheel setup - stock 18's painted meteor gray (damn near matte black / eggshell finish plus a bit of metallic gray flake) on Blizzaks. I've always been...

I'd still prefer adapters over wobble bolts regardless the width/offset of the wheel.

O_E

Correct, the spacers would effectively decrease the offset by the thickness of the spacer. You would effectively be running 18x8.5et15

O_E

I'd rather run an adapter than wobble bolts. You're putting a lot of strain on the mounting hardware putting it off-center like that, and 450lb/ft of torque is a lot of shearing force... Not that...

Front: Your new setup would be 15mm closer to the strut
Rear: Your new setup would be 27.7mm closer to the strut

Fronts you'll want 20mm if you can't find 15mm, but you'll need to roll your...

1/8th inch closer to the strut, not a dealbreaker so long as you're not running wider tires / lowered suspension. What kinda goodies are you looking at?

O_E

Purrrrrdy! How's the ride on 30 series / 20" rims? I've been debating looking at 255/35/19 setup to get a bit more clearance around the caliper, but anything that lowers the total weight is crazy...

Thanks, was thinking tread width not section width, and tires from a different vehicle. I guess we can tell who got an early start on St. Patrick's Day!

O_E

Shouldn't be a problem, the section width on a 245 tire is 9 inches so it will be nice and flat.

O_E

1) Yes, you'll need the hub bore adapter.
2) Grab 5mm spacers (Actual difference is 3.4mm but kicking the wheels out an extra 1/16" can't hurt one bit)
3) Stack them Hub->Spacer->Adapter->Wheel
4)...

18x8 with 45 offset is going to rub those calipers something fierce. Would need major spacers (think 25mm+), and it's a narrow rim to begin with, so your tires would bulge out pretty far beyond the...

Did you use any lubricant on the metal-metal contact surface of the spacer? Recommend brake anti-squeak compound, shouldn't need too very much of it. Sorry, have been doing my own wrenchwork so...

Can't recommend a brand since I've only had the one set of summer tires so far. I can say I'm ordering PSS in 255/40-18 for my RS6 in Michelin PSS. Best bang for the buck from what I've heard.
...

No matter which direction you go, make sure your tires have a load index rating of 99 or higher. One of the big reasons you'll get flat spots is due to the load on those tires that aren't rated for...

Hopefully I'm not too late to help.

You _can_ use either of those spacers. It's all a question of how you sandwich the stack. I would recommend you go this way:

Hub-->Adapter-->Spacer-->Wheel...

I'll take it as a compliment, I know I tend to ramble when I get into the tech side of things...

Did you mean directional rather than rotational? The only time that matters is when you're getting...

If I were you, I'd stick with stock size. 255/40-18 is the proper size to keep the speedometer and odometer dead-on accurate.

Keeping the speedo/odo accurate on the same diameter rims, you will...

Thanks to the high offset, you would need to add spacers to keep the inner edge of the tire away from your strut.

Based on the wheel dimensions, the inner edge will be ~17.4mm closer to the...

Need part numbers or at the very least the actual wheel dimensions for the peelers you're looking at. Depending on which (S4/S5/etc) 19x8.5 or 19x9, there are different offsets for different models....