Try this on for size?

[dietrich]

Okay I'm really going to need to pull from the collective wisdom of the forum on this. I've got an 85.5 944 automatic that begs for a fourth gear on the interstate. Even on curvy secondary roads with 35-45mph speed limits I can just leave it in 2nd gear but still that is reving too high sometimes. I am seriously considering going from 215/60/15 on phone dials to 215/60/16. By my calculations that should take off close to 200 rpms which makes a difference and to me is worth the trouble. I have seen a few places selling 16" phone dials that are 7Jx16 with 52.3 offsets.
First of all, would these wheels fit my car as is or would I need spacers?
Would I need to make any adjustments to the car?
I'm not worried about throwing off the speedometer b/c it reads high already according to my Tom Tom. This combination should make it more accurate.
I would get the same size wheels and tires all around for simplicity sake and for rotation issues.
I did the same thing with one of my other cars, a 1977 Mercedes 450sel again with a 3 speed auto. I went from 205/70/14 to 215/70/15 and the results were terrific. It reved lower, even handled better, and the gas milage went from 15 to a whopping 16 mpg...
Thanks in advance to anyone who helps.
Dietrich

[flash968]

something to consider - going to a larger wheel to get taller effective gearing has a couple of drawbacks - weight and gearing change - the added weight will reduce acceleration - the taller effective gearing will too - if getting off the line is important, this may not make you happy

as to fitment, i'll defer to someone else on that, as i'm not sure where the break was

[idontknow]

iirc the wheel offset changed in 87 so you'll need 1" spacers if you want to use those rims.

[fastfredracing]

911 fuchs will bolt right on, and in my opinoin are the nicest looking wheel on a 944. there are also fake fuchs ,you can get a set of 7's&8's for under 600.00. I wonder if the turbo 16" wheels may fit as well??