A8 Parts Forum - Police warning: incorrect wheel size on Audi A8L D2

A8 Parts Forum (https://forum.a8parts.co.uk/index.php)

- D2 - Wheels and Tyres (https://forum.a8parts.co.uk/forumdisplay.php?f=28)

- - Police warning: incorrect wheel size on Audi A8L D2 (https://forum.a8parts.co.uk/showthread.php?t=10654)

Quote:

Originally Posted by Adrian E (Post 100570)

I need to double check when I'm back in the office - reading C&U I mentioned above I can't find any reference to it. Spray suppression only applies to HGVs in there. I would say you are borderline (on the wrong side of the border!) due to the rim sticking out past the arch on the front, so Reg 100 may apply (avoidance of danger), but need to check with a colleague if there's specific reasons to be considered legal/illegal. Are you running very low? Appears to be a lot of camber on the rear. You might get away with it in terms of wheel sticking out as the top edge is under the arch, but due to the camber a lot is sticking out at the bottom.

Of more concern is the apparent stretch to the tyre - post your wheel and tyre sizes and I can defo confirm if they are legal or too stretched. There is definitely guidance for that!

If you're running spacers I'd be tempted to go in 5mm all round just to prevent aggro.

Will check wheels and tyres sizes tomorrow. Previous owner fit lowering springs (forget to ask, how many mm). And he put 10mm spacers on a front to clear brake calipers, didn't check rear yet.

Wheel and tire size.
Wheel R20x10
Tire 255/35/R20
ET 40

What's the offset, out of interest?

Quote:

Originally Posted by Adrian E (Post 100570)

Any news?

Sorry - mad day at work yesterday and forgot to dig out my standards handbook. Will try and look it up today

Hiya

Have the printout in front of me :)

The manual works by considering profile first, then tyre width and then lists acceptable wheel widths

For 255/35R20 tyres the recommended width is 8.5" (J profile, but they all are basically unless they're very specialist)

The alternate approved rims are 8", 9", 9.5" and 10"

If you wanted less evident stretch the recommended tyre width in a 35 profile is a 285 but you'd need to check rolling radius to make sure that wasn't going up a lot (it probably doesn't)

If you pm me your email I can send you a copy to keep in the car in case you're stopped again? Won't deal with the bodywork issue but it should deal with any suggestion the tyre is too stretched

I've been working from home today - will grab the info and mail you tomorrow +++