I checked the tire size calculator and the diference at 60 mph made it 62.5 mph. I was just wondering if it was fixable or not, thanks for the help.

I'm surprised it's that much of a difference. Stock tires were 225/50/16.
1) The stock speedometers on any car are not totally accurate so a few mph difference is not a big deal.
2) I don't know how to change or adjust a speedometer but I can tell you from experience changing the speedometer or the cable to the dash is a huge pain in the butt.
3) Drive 50, 60, 70... mph next to a few friends on your cell phones and compare speedometer readings.
4) Make a mental note of the results and use that information accordingly.

And remember...if you have NO FEAR...you're not driving fast enough.:)

Good and inexpenisve brands?
 

I have stock rims with Goodyear Eagles that were on the car when I got it. I want to replace them with Falkens or Toyos. And maybe get some 16 or 17 inch rims.

I kust got a set of 18 inch Exels with kumho exctas on 'em. http://www.toyota-supra.info/forums/...ons/icon10.gif

I just got a set of used MKIV. 16 x 8 in the front and 16 x 9 in the rear. The fronts came with 225/50 which needs to be replaced. I think I'll stick with 225/50 just need to decide on the tire. The rears came with 245/45 and are still o.k. They're on Yokohama es100 I believe. In the future I want to go with 255/50s in the rear.

Black Racing Pro N1
17x8 all round
235/40r17 front Falken Azenis ST-115(discontinued)
225/45r17 rear Falken Azenis RT-615 (popular)
http://i296.photobucket.com/albums/m...upraavatar.jpg
http://i296.photobucket.com/albums/m...0/SSPX0526.jpg
drifts real nice.

gonna go with 225's all round soon but not Azenis.
they're too expensive for what i do to them. and they're too grippy lol

i just got my ADR Spartan Black/Polished lip 18x8.5 20 offset and 18x9.5 25 offset with 235 40 falken fk 452 and 275 35 dunlop 9000. Just roll the fenders a bit and all good, also lowered with H&R Springs.

I run Goodyear Eagle F1's 245/50-16's tires and American racing Rims normally people put them on mustangs but there actually very nice on my supra and there Powder coated white so they dont look cheezy got them for free but there around 600 normally

Excel 10 spoke BBS style rims with Kuhmo Ecsta 225 40 18 size tyres.