18s vs 19s wheel gap

[Dalper5]

Can someone definitively explain what causes the 4x4 looking wheel gap when changing wheel/tire dimensions?

For example, I have a B8 S4 with stock 19s. If I go for 18x9.5 V710s with 255/40/18 for winter, how will the wheel gap compare to what I have now? It seems like the total diameter is very close, so the distance between the fender and the wheel should be the same right?

I've seen some wheel swaps cause a horrible amount of gap, is it because the total diameter is changing?

Thanks in advance.

[Slavchob]

Willtheyfit.com

This should answer just about everything for you. The website is pretty sweet.

[svander]

I've seen some wheel swaps cause a horrible amount of gap, is it because the total diameter is changing?

Yes.

Correct tire sizes should result in a consistent overall rolling diameter regardless of wheel size. You're only replacing inches of metal with rubber or vice versa.

More wheel gap would mean the overall size of the wheel with tire ended up being smaller (a good example would be the lowrider style 60s and 70s Caprices that roll around in smaller diameter size wheels).

[Akatsuki...]

Willtheyfit.com

This should answer just about everything for you. The website is pretty sweet.

Awsome link! Thanks.

OP.. smaller wheel.. more tire... usually it will look like ur gap got bigger.. Happened when I changed from Tri 5 spokes to BBS CH 19 to 18s..

[Seinsmeld13]

they will be the same size rookie