I have a 85 Trans am with 15s on it I want to change 17x9 with 245 45 front and 265 or 275 45 rear what offset and or spacer will I need for this to work? Also the car has 2" lowering spring front and rear if that makes a difference !

 

17X9.5 with 5.5" backspace will fit 275/40/17 all the way around.

 

Thanks thats what ineedef to know !

 

With stock front brakes, you may need a 1/4" or so spacer up front to clear. Safer to go 5.25" BS with that sized wheel.

 

Listen to Paul. He knows best. I was just trying to pull the dimensions from memory. Memory is not what it used to be.

 

17x9.5 +6 offset


275/40/17s all around .

 

Enough with the tease, give us some side shots!