91 Ls 400 Wheels

[Pass V1]

Hey everyone, Just got a 91 ls 400. But the 15 inch wheels are not pretty. So I want to replace them but the queston is: What size wheel & tire will give me a little better look BUT not alter the ride?

I see the later years went to 16 inches. SO I am planning on 16's:) Simple nothing too flashy. The tires rack suggest 16X7 with a 225/55/ 16 but doesn't the 16's on the ls 400 carry a 225/60/16 stock? Will the 60 series throw off the speedometer? Or is the 55 series be better for the speedo but bad for the ride?

Plus what is a good offset? The wheels I am planning on getting are 40mm offset?

Any advise would help.

[91LS400vgb]

Take a look at http://www.dakota-truck.net/TIRECALC/tirecalc.html

I'm actually thinking of doing the same thing. My 1991's 15 inch wheels are pretty scuffed up and I can get some 16 inch rims from a 93 or 94 for fairly cheap. Using the link above, it says 225-55R16 will result in the speedo reading low by 0.98% - not bad. 215-55R16 result in being high by 0.72%. I'm a bit concerned switching to 16 inches only because I know there were suspension and braking improvements made to the 93 and 94 models, I assume in part, to compensate for the larger wheels. I'm hoping I'm not making a mistake by going to the bigger rim - or should I not worry?