I have a 1994 SC300, I belive it has 15's. Im so glad i asked here, i didnt know there was so much invovled!

 

It's not as complicated as some make it out to be. Basically, it's best to keep the circumpherence as close to stock as possible because the cars systems were calibrated that way. The main issue is the speedometer. However, going a little taller is not going to throw the speedometer so far off that it'll cause you to get tickets...and it certainly won't hurt your car. I've used 17's, 18's and now 19's. My speedometer is off about 3 mph. Big whooppee. Don't be too concerned. Mainly you're looking for the right look. The sc has big wheel wells. They need to be filled to make the car look better. I've had 245-45 on 17x7 rims with no problem at all. Plus you need this size to fill the space as much as you can. Again, my recommendation is 235-45 front and 245-40 rear. I believe someone said 235 would be too big for the front. I currently have 245-40-19 on my front and 275-35-19 on the rear. You'll have no problems at all and no change in your speedometer with my recommended sizes...and you'll still have a comfy ride. Call my wheel shop at 954-771-4508 for questions. Ask for Dave or Charlie. Tell them Reggie referred you. They will take time to answer all your questions.

 

Were are you located? Thanks alot!!!!!!

 

I live in ft laud but where ever you are, they'll help you with advise. If you buy from them, they can ship it. I just suggested calling in case you still need advice.

 

Just a quick note:

Hermosa's information would be correct if this were an SC400. However my recommendation was based on your profile which said you have a 94 SC300.

 

Yes. Sorry for my assumption that it was an SC400


Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
215/60-15 5.1in 12.6in 25.2in 79.0in 802 0.0%

225/45-17 4.0in 12.5in 25.0in 78.5in 808 -0.7%
245/40-17 3.9in 12.4in 24.7in 77.6in 816 -1.8%