Auto Union Jack

Anyone running 245/45 on their stock 16x7s? TIA.

allroad'Ed now

The front tires barely clear the strut tower. Only have 6mm clearance (measured to see). I can't imagine that most 245/45 would fit.

And I think that a 245 is too wide for a 7" rim. On my 911 I run 245/45-16 on 9" rims.

Auto Union Jack

The 245's are actually shorter than the 225s and a little less wide (.2") than 235/45/17s. I'm going to mount 2 and run staggered if I rub up front. I know it is not in the rim range, but Audi frequently runs .5" under the range. The 255/40/17"s on S6 Avus run .5" short which lessens tire width .2" off suggested rim width. Thanks for the response. Will post results.

Singletrack

So how could a 245 be less wide then a 235?

-st

Auto Union Jack

245/45YR16 94Y SL 220 AA A
1477lbs.
51psi
10/32nds
7.5-9"
8"
9.6"
9.1"
24.6"
847

235/45YR17 94Y SL 220 AA A
1477lbs.
51psi
10/32nds
7.5-9"
8"
9.4"
8.7"
25.3"
823

The industry rule of thumb is that for every 1/2" change in rim width, the tire's section width will correspondingly change by approximately 2/10".

For example: a tire in the P205/60R15 size is measured on a 6.0" wide wheel and this size tire has an approved rim width range from 5.5" to 7.5" wide. The tire has a section width of 8.23" (209mm) when mounted on a 6.0" wide wheel. Additionally, some vehicle manufacturers and tire companies have permitted rim widths that are not within the tire's original approved rim width range. For example: BMW has combined 235/40R17 sized tires on 17x7.5" rims (which are 0.5" less than the narrowest 8.0" wide rim listed for the size) on certain M3 models; and Chevrolet has combined P255/50R16 sized tires on optional 16x9.5" rims (which are 0.5" wider than the 9.0" wide rim now listed for the size) on certain Corvette models. While these applications have received the approval of the vehicle and tire manufacturers, staying within the approved rim width range helps assure that the tire's internal stresses are within its design parameters. So, you get back .4" from the measured rim width spec on the 16" wheel because that rim is 7" wide and it is ideal for a 16x8. Whereas, the 235/45 on a 17 is at suggested measured rim width.

Singletrack

Ok, so the rim you put it on will affect how wide it actually sits, is that correct?

Auto Union Jack

According to the info from tirerack, I guess so. I'm going to give it a shot.

Singletrack

Cool, let us know.