scoobyboy1

iTrader: (16)

My brother has a nice set of Pirelli Corsa Road legal track tyres in 225/45/17 and asked if I wanted them, would they fit my classic STI???

tsl202

hi mate, check here Tire Size Calculator - tire & wheel plus sizing
with this size you'll be almost 4% to quick, better with 215/40/17 1.2% quicker

tsl202

hi mate try this Tire Size Calculator - tire & wheel plus sizing
your size will be off scale, giving almost 4% to quick than OE mount.
look for 215/40/17 just 1.2% to quick.
law allows you a 3% difference increase or decrease in speed readings
hope this help
Daniel

Noris8322

iTrader: (1)

Hi, what offset are the wheels on your car??

scoobyboy1

iTrader: (16)

not to sure, they are Speedline ST2's wheels on my car!!!!!

Noris8322

iTrader: (1)

I cant remember what offset they are, its normally stamped in the back of the rim

I know that depending on the offset of the wheels, 225/45/17's can fowl the spring seat on the shocks