Wheels and tyres [Archive] - Audi Forums

: Wheels and tyres


audisline
12-01-2010, 04:27 AM
I have the origonal alloys on my B7 Cabriolet.
18" with tyres 235/40/18Y

I wonder if any of you know.......will 19" fit and will they look the part. I am guessing the ride height increases a tad.

Also there are lots of alloys out there at very reasonable prices.....but most are 18" x 8"

Mine are 18" x 8.5".......................would 18" x 9" fit OR 19" x 9" be ok.

Simple questions if anyone has replaced their alloys before. :)

Doctor_H
12-14-2010, 07:08 PM
Bump for a response. I am also interested in knowing.

Thanks

audisline
12-18-2010, 09:23 PM
:lol: It would appear nobody changes their wheels on their Audis.

mullardel34
12-20-2010, 11:42 AM
I have the origonal alloys on my B7 Cabriolet.
18" with tyres 235/40/18Y

I wonder if any of you know.......will 19" fit and will they look the part. I am guessing the ride height increases a tad.


Yes, 19" wheels can be fit to a B7-platform A4. No, there will be no increase in the ride-height of the car; when you increase the wheel diameter, you must make a corresponding decrease in the side-wall height of the tires. Otherwise, the odometer/ABS/Quattro/etc. would be thrown-off due to the change in the overall tire circumference. The largest 19" tire that can be accommodated on the B7-platform A4 is 235/35-19.


Also there are lots of alloys out there at very reasonable prices.....but most are 18" x 8"

Mine are 18" x 8.5".......................would 18" x 9" fit OR 19" x 9" be ok.

Simple questions if anyone has replaced their alloys before. :)

19"x8.5" is about as wide as you can comfortably go on the B7-platform A4. To have the wheel rims of a 19"x9" wheel clear the inside lip of the fenders, you would need to have a higher offset for the wheels. (Offset (wheel) - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Offset_%28wheel%29)) The wheel offset is usually expressed in millimeters as the "ET" parameter for a given wheel spec.

For example, check out the available fitments for the B7-platform Audi's at Hartmann (http://hartmannwheels.com/audi-wheels); locate a wheel of interest, lookup your Audi model in the tables beneath each wheel, note the ET specified for a given wheel diameter, then see if the particular spec wheel is available. Another popular after-market fitment for Audi models is VMR Wheels (VMR Wheels by Velocity Motoring - Aluminum Alloy Wheels for German Cars (http://www.velocitymotoring.com/)). You'll need to directly contact the other vendors and/or their dealers to determine fitment parameters.

I believe that you'll find that resizing wheels/tires really isn't all that simple, particularly when you're trying to maximize the diameter/width. You'll have to do your due diligence to ensure that you're looking at a viable fitment on your car. :cool:

EBG913
02-04-2011, 11:27 AM
this info was really helpful.

any idea if these S5 wheels would fit on my B7 S4? (Audi S5 wheel | Flickr - Photo Sharing! (http://www.flickr.com/photos/automoblog/2662063355/))

I thought I read somewhere that they would if i used 245's instead of the 255's that usually come with those rims. would that make sense?

any help/info you could provide would be great.

thanks,

Eric

mullardel34
02-04-2011, 02:42 PM
You can't just toss out some pics and ask, "Will these S5 wheels fit my S4?" You really need to provide more specifics if you're looking for an informed response... :confused:

What wheel diameter are you talking about? S4's (with Premium Plus package) come with either 18" or 19" wheels, which come fitted with either 245/40-18's or 255/35-19's as their OEM fitment, while S4's (with Prestige package) ONLY come with 255/35-19's as their OEM fitment.

A matching S5 replica wheel is available for the Audi S4: 2010+ (19" ET38, 20" ET40) as the Hartman HS5-209 at $285USD/wheel (Hartmann Wheels - Audi Wheels, stock replicas - hartmannwheels.com (http://hartmannwheels.com/audi-wheels)). Then combine these wheels with the appropriate OEM tire sizes and you should be "good to go"... :cool:

EBG913
02-04-2011, 03:13 PM
Thanks. My S4 currently has 18's. Looking to put OEM 19s of these S5 wheels on. They are coming with 255/35s as u suggested they do from Audi. It sounds like these would fit. Do u think I'll need to make any adjustments or do I have offset issues or anything?

Worried that they'll stick out past the wheel well or rub.

Really appreciate the help and apologize for my lack of knowledge on the topic.

mullardel34
02-04-2011, 03:44 PM
We're all learning here in the forum, so no problems... :D

Mixing and matching OEM wheels between Audi models can leave you with fitment issues.

First, you need to determine the bolt-pattern of the S5 wheels and see if that matches the bolt-pattern of wheel hubs of your 07 S4. Most Audi's use OEM Audi 141.5mm ball seat lug bolts, so as long as the bolt patterns match, you should be OK.

Second is the matter of wheel offset (Offset (wheel) - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Offset_%28wheel%29)). The Hartmann S5 replica that I had noted previously states that the offset is significantly different between S5's and S4's (Audi S4: 2010+ (19" ET38, 20" ET40), Audi S5: 2008+ (19" ET25, 20" ET25); that's over a half-inch difference.

Do you know the wheel offset of the OEM S5 wheels?

EBG913
02-05-2011, 10:49 AM
Looks like they both use 5x112 pattern. Offset on S5 OEM 19 x8.5 appears to be 32mm. Offset on S4 OEM 18x8 appears to be 45mm.

Wouldn't the 1/2 inch increase in wheel width be compensated for by the 13mm decrease in offset? 13mm is about a 1/2 inch. Not sure if it works that way though.

EBG913
04-25-2011, 10:26 AM
any one know the answers on this:

looking to run the S5 OEM 5 star double spoke wheels (19 x 8.5 with 32mm offset) on my 2007 B7 S4. I currently have 18 x 8" OEM wheels that i believe have a 45mm offset.

I'm thinking/hoping this works with a 245/35 19 or a 235/35 19...thoughts?

anyone done this before or have a feel for if it will fit w/o rubbing?

my car is stock height and i think these wheels look great. i've seen the hartmann reps, which look very cool too, but i prefer the bright silver wheels b/c they match (or are closer) to the S4's mirrors. Would love to see someone else that has done this before.

thanks!