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Discussion Starter #1
Hi guys,

I've just acquired a set of OEM RS4 20' alloys for my A5 3.0tdi q sport. It's currently on 19' y spokes and with H&R spacers (15f, 20r), lowered with H&R OE's.

My question is, what is the max size tyre I can get on the new 20's without any rub. They are A5 20's, ie ET29 currently with 265/30/20 tyres. The tyres are all goosed so will need new ones after they are refurbed. Could I get a larger tyre on, say a 265/35/20 or 265/40/20 without causing rub??

Also, has anyone fitted the OEM's with spacers, as the ET is 29 they will stick out a bit more, which I'm not too bothered about as I only went for 15/20 spacers!!

Thanks for any advice

Jim
 

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I ran 255/35/20 and it was a very nice look and kept the ride comfy. Thats as large as I would go. It will give you almost the exact amount of sidewall you had on your Y's. 10mm f and 15mm r would be optimal but 15/20 should work if you are ok with the look.
 

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Firstly I'd like to say hello as this is my first post :thumbsup:

I recently acquired some A7 rs4 7 spokes which were brand new with 265/35/20 yoko advans, thought I would put up with the out of calibration issues of the speedo and mpg for the life of the tyres as I got the wheels and tyres for a crazy price.

I do get some very minor scrub on the rears but it's only pot holes of drain covers to be honest.
I've also just lowered it on eibachs and the rears are toeing in big time which doesn't look like its helping the clearance. Getting 4 wheel alignment done at awesomeGTI tomorrow so hopefully sort it.

As for speedo and mpg figures. They are almost 5% out which was annoying at first but now doesn't worry me.
Ride comfort is pretty much the same as before the with the stock 18s and standard suspension which is nice.

By choice I would never have gone for the 265/35's though
 

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Discussion Starter #5
Richie,

What would you have gone for then? 265/30/20's???

Cheers
 

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Hello mate

I would have gone for the 265/30/20 as a lot of guys on here have done.

Simply for the fact it doesn't affect your speedo/mpg readings so you know what it says it pretty much correct. I've gotta constantly take into account that at 70mph I'm probably doing circa 74-75 mph and my mpg average for a 240 mile run down to the isle of wight was 40-41 mpg and I'm lucky if i see a 38mpg reading now.

They will deffo be replaced by the correct size when the time comes.

P.s.

Just posted a few pics in the new user forum if you wanna have a look with regards to stance etc. :thumbsup:
 

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Discussion Starter #7 (Edited)
Thanks Richie,

Think I will stick to the 265/30/20's then, although I would have prefered the 35's for a little more protection!

Had a look at your car, nice motor. My wheels are the same, although not fitted yet! I'm going to save them for Summer (well March/April) to swap off the Winter 'Y' Spokes - can't wait, LOVE the RS4's......

Cheers

Jim

ps, How do you like the Yoko's? I'm running Pilot Sports at the mo, they have been very good in the Summer Months!!
 

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Hey Jimbo...as I said the 255/35 would work and provide more cushion and they are not as tall as Richie's 265. Honestly they worked great asthetically imo. Pics in build thread.
 

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Discussion Starter #10
Ok thats great MopstA I'll have a look.

Mine isn't aggresively dropped, just the HR OE's, so I guess rub shouldn't be an issue, and I'd like that extra you get with the 35's for rim protection (what littel they offer that is - LOL!!!)...

Thanks guys
 

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Jimbo I to am on OE's and ran a 20x9 et40 with 20mm/25mm and NO rub at all on the 255/35's.
 

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I'm running 275/30-20 with no problems, bit more comfortable running and fill arch's better.
 

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Discussion Starter #13 (Edited)
Ok guys,

I've just picked up some P-Zero's for a crazy price. They are 275/35/20's!

I know they will make my speedo under read by approx 4.5% which I can live with no probs, but will there be any chaffing/rubbing???

I'm lowered on H&R OE's so not massively and spacers on front and rear 15/20's and the wheels they are going on are ET29 original A5 RS4 wheels.

Not putting these wheels on until Spring as we still have snow here in Sunny Manchester!

Your thoughts will be appreciated

Cheers

Jim
 

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Just a thought for you UK guys, knowing how anal the insurance is in this country I'd be advising my insurance company of the change to non standard tyre sizes as it could get a little messy if you have a shunt and find you're not insured...
 

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Ok guys,

I've just picked up some P-Zero's for a crazy price. They are 275/35/20's!

I know they will make my speedo under read by approx 4.5% which I can live with no probs, but will there be any chaffing/rubbing???

I'm lowered on H&R OE's so not massively and spacers on front and rear 15/20's and the wheels they are going on are ET29 original A5 RS4 wheels.

Not putting these wheels on until Spring as we still have snow here in Sunny Manchester!

Your thoughts will be appreciated

Cheers

Jim

You are over 5% more than the standard ratio with a 35 profile, i'd advise either 275/30 or what mopsta said 255/35.. Regardless of your speedo, your overall circumference is 5" more than stock, you will increase the likely hood of rubbing even on H&R OE springs

Im running 275/30, car is slammed, went from 20mm rear to 15mm rear spacer to aliviate rubbing. I too have the OEM 20X9 29ET
 

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My 265/35's rub a fair bit with eibachs at the rear. I do have 20mm spacers as well which doesnt help. Basically, i can no longer have 4 people in the car its that bad as i recently found out :(.
 

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Decided on a 9" x 20" wheel ET29 & was originally thinking ideal tyre size would be 255/30/20 as I intend lowering using the H&R OE 1" springs.

Guy at the wheel specialists (who I've known a good while) agreed, but is able to offer me a good deal on some 255/35/20 which he reckons will be just as good.

As I'm lowering & want to fit spacers to achieve a 'flush look' I'm really concerned about rubbing, can anyone reassure me on this size...??

(had 1" lowering & 20/25mm spacers with 19" wheels on previous A5 without ANY issue - just wanna be sure things will be the same with 20" wheels)
 

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Decided on a 9" x 20" wheel ET29 & was originally thinking ideal tyre size would be 255/30/20 as I intend lowering using the H&R OE 1" springs.

Guy at the wheel specialists (who I've known a good while) agreed, but is able to offer me a good deal on some 255/35/20 which he reckons will be just as good.

As I'm lowering & want to fit spacers to achieve a 'flush look' I'm really concerned about rubbing, can anyone reassure me on this size...??

(had 1" lowering & 20/25mm spacers with 19" wheels on previous A5 without ANY issue - just wanna be sure things will be the same with 20" wheels)
Ive been through all 3 variations, first with thanks to Mopsta, I went with the 255/35/20, I got a crazy good deal on the Pilot Super Sports as they were on introductory pricing, the look however just did not suffice the eye and it was also the first thing many other people notices, I must add though the car was not lowered, but the ride etc was perfect.

I now have 265/30/20 and this in my opinion is the defacto.... looks much better, the ride is still perfect (no issues even with the shite roads we've got here in Atlanta).

275/30/20 I have on another set of rims, the width just pushes the tires up making it similar to the 255/35/20.. but its also worth noting that in the UK on the OEM 20" RS4's Ive seen both 275 and 265 tires fitted from dealer.....
 

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Discussion Starter #19
I actually ended up putting on 275/35/20's as I got done pZeros at silly money!!

Yes I know my speedo will now under read, but they will be replaced by 265/30/20's when the time comes.....

I also had to remove my 15/20 spacer set up as they were too close to the arches!

I will get some 10mm's for the front and will put the 15's on the rear's when I get some 265/30/20's, with the ET29's should be perfect ;-)
 

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Cheers Hitster

As mentioned, previously had 1" OE lowering & 20/25mm spacers with 19" wheels, loved the look & had no issues whatsoever.

(see http://www.a5oc.com/forums/a5-performance-mods/11831-pics.html)

Really like these 9" x 20" ET29 wheels I've seen & having read Mop & Ecrew's threads it seems I'd be ok with 255/35/20 tyres.

Don't want the car to sit too low & obviously have any probs with rubbing etc, altho suppose that would depend on what size spacer I went with.! (I'm allover this site looking at pics of different set-ups, trying to decide between going for the 20" or sticking to 19") :wall:
 
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