Quote:
Originally Posted by mtnbkr
I'm glad the OP was able to find the size for their setup but does anyone have actual experience with 255/40R18 as a square fitment on 9.5" rims? It irritates me if my speedo is under-reporting and while a 40 profile results in the same OD as original I'm unsure if it'll rub with a mild (~1/2") drop. Yes I realize a 35 profile may have slightly better feel and better for torque but it's also worse at handling rougher roads? and greater speedo error!
I like that the 255 tread width (for the MPSS tire) matches the 9.5" rim which is why I'd like to stick with that size.
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I got my current daily set from tire rack when they had the Conti DW on clearance, 255/40/18 and 275/35/18 to go on a set of Arc-8 18x9 et42 (12 mm spacer) and 18x10 et 20. When it came to mount them, the 255/40 were WAY too tall and hit the fender liners everywhere (even with -2.7* camber in the front on stock suspension!). Needless to say, had to scrap the 255/40 idea and go to 255/35/18 instead. Fixed the height/rub issue and fit quite nicely.
IMO 255/40 MPSS on the stock 9" rears are stretched AF, so I can only imagine 9.5" would be worse. Why not do a square 265/35 instead?