Tire Size Needed?

[TheFallenJosh]

I have a 95 GS-T I'm putting the 3G GSX "style" wheels on. Now my question is do I use the 215-50-17 tires the GSX has stock on them for tires? Or will it throw my speedo off and I need a different size tire? Someone let me know, thanks

 

[steve]

The closest +1 size would be 215/45-17. It's slightly smaller in diameter then original. It reads 1% too fast so that at 60mph indicated your actual speed is 59.4 mph

215/50-17 is slightly larger in diameter that stock and will read 2.4% slow so that at 60 mph indicated you would be going 61.4 mph.

I don't think either of these errors are a big deal. If the question is that the wheels have good tires on them and you want to use them, do so.

Tire size calculator

 

[djmidnite]

I found this tool that even has backspacing/offset changes.
Custom rims, wheel tire packages for your ride - RIMSnTIRES.com

 

[TheFallenJosh]

The closest +1 size would be 215/45-17. It's slightly smaller in diameter then original. It reads 1% too fast so that at 60mph indicated your actual speed is 59.4 mph 215/50-17 is slightly larger in diameter that stock and will read 2.4% slow so that at 60 mph indicated you would be going 61.4 mph. I don't think either of these errors are a big deal. If the question is that the wheels have good tires on them and you want to use them, do so. Tire size calculator

oh wow I didn't know the difference was that insagnificant. . when i was reading about it they made i sound like it would read way off! when i bought the rims they did not come with tires so i wanted to make sure i ordered the correct size. thanks for the help!

 

[jtmcinder]

The speedo reads something like 5% high with the OE size. Slightly larger tires will actually make your speedo more accurate.

 

[LxiMax]

If it were me, I'd run 225/45/17 and not look back. More bang for your buck, plus the 215/45/17 has a really small sidewall compared to a 215/50 or a 225/45.

 

[jtmcinder]

I haven't heard that 3.8" is "really small" when compared to 4.0" ... but my wife knows about my insecurities, so maybe that's why I have never heard it expressed in those terms before.

 

[TJCTalon]

hahahahah ^

Im running 225 45 17 on some gsx rims with no problems. Speedo seems normal too me, and I havnt been pulled over so im not going too fast