Can I fit a 285 tire on a 19x10 et 55
Thanks




Some have wide tread width others narrow, there are square or round shoulders.
As for front a 255 would fit nicely on a 9.5rim which is similar to the W205 coupe front wheel spec.




Manufacturers only show the carcass width.
Check out both the 4s and Cup2
Michelin Pilot Sport 4S (tirerack.com)
Michelin Pilot Sport Cup 2 (tirerack.com)
Both of them run on the wider side so you'd have some rubbing with either tire if you're thinking 255s & 285s. You should be good with 245s & 275s. That's what I and a bunch of others on this forum are running, although on an ET50 rear. With an ET55 rear you'll be 5mm closet to the strut and things are pretty tight in there so it might rub on the inside.




if you find the rear does rub in the inner strut surface you could run a thin spacer 3 or 4mm to help clear although you may need longer bolts then.


