Alright i just recieved some rims from my uncles friend but he didnt give me the info on what tire size to use the specs are

Front: 19x8.5 +37

Rear : 19x10 +40

my camera fone going crazy but this is what they look like but in gunmetal

 

245/35/19 up front, 275/30/19 in rear (roll fender)

 

Hi guys i have bought an RX8, i have to change tires, but I've found this car has 235/40/18 rear and 225/45/18 front so i wondering why, i was thinking buying same size rear and front, and i've thinking in 235/45/18 rear, and let the 225/45/18 front so what do you think, what is the desire sizes, i have to change rear wheels front are ok so can you please give me a hand about it ?

 

I just put 245/40/18's on both front and rear. looks GREAT, no rubbing. about an inch wider than the stock 225/45/18's.