On both 1991 740 & 940 turbo wagons I run 195/60/15 summer & 185/65/15 real winter tires. Never had any problems.
ian

My personal favorite would probably come down to either of the oversize choices you've got there. I like the look of the slightly larger tires, but that's just me. I'm a Michelin or BFG kind of guy for a lot of my tire choices, but certainly personal preference and budget fit in to the equation somewhere as well.

I run Pirelli 205/55-16 on Hydra wheels on my turbo.

I picked up a full size spare that was 185/70/15 I think, which ended up being the right size. While driving with it, I got some squealing under what I considered normal cornering, though it was a little fast I think I must be used to the bigger footprint.

Hope that helps.

You might also correlate fuel efficiency with wider tires. Wider tires = more traction = more friction = less efficiency

Good Luck,
Will
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1990 740 Turbo, on its way to stock specs, maybe beyond

I have the same car you do. I have been using 195/65/15 for the last 80k and I am happy with them. Before that I was using 185/65/15. I don't like the look of 205/60/15, I think they look silly on a station wagon, but of course that's just a matter of opinion.


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Matt L. -- Cary, NC -- 1991 740 wagon

I run 215 60s x15 on one of my cars with no ride issues after 3 years, and 195 65s on the other two. It is kind of personal preference as far as looks go. My pick for rubber is Kumho and Kelly Springfield.
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Will Dallas, www.willdallas.us, www.willdallas.org, www.willdallas.com, www.dallasprecision.com 86 245 DL 222K miles, 93 940 260K miles, 88 765 GLE 152K miles, 88 780 246K miles, 93 Buick LaSabre 119,000 miles

The 195 is probably nice for splitting the difference. I went with the 195's on 15" 240 wheels for pretty much the same reason.

-Ryan
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Athens, Ohio
1987 245 DL 314k, Dog-mobile
1990 245 DL 134k M47, E-codes, GT Sway Bars, GT Braces, Draco Wheels
1991 745 GL 300k, Regina, 23/21mm Turbo Sway Bars