Not a Mazda question---a buddy just picked up a 2018 Acura MDX and is looking for snow tires & wheels. The stock Mazda wheels have a 55mm positive offset. That's more than most cars. Our CX9s have 45 mm offset. Aftermarket wheels seem to max out at 40 mm, and I've read that one should shoot for no more than a 5 mm difference from stock. So...what can he do? He can't find used Acura wheels that fit. He won't pay dealer price for new Acura wheels. Non-bolted spacers would require longer lug studs (not practical for switching between stock wheels with summer tires and aftermarket wheels with snows), or bolting the spacer on (probably would require trimming the studs, not good for summer wheels). The car has optional 8Jx20 ET55 wheels, and he wants the standard 8Jx18 ET55 wheels for the snows.
Any good suggestions?
Offset is how far the wheel's mounting face is different from the center of the rim. Positive offset has the mounting face outboard of the rim centerline. Our CX9 wheels have the wheel mounting face 45 mm out from the centerline of the rim. Correct offset is necessary for clearance from suspension parts, brake calipers, and fenders and for proper handling.
8Jx18 ET55 = 8" wide rim. J type bead. 18" wheel diameter. ET55 = 55 mm positive offset
Any good suggestions?
Offset is how far the wheel's mounting face is different from the center of the rim. Positive offset has the mounting face outboard of the rim centerline. Our CX9 wheels have the wheel mounting face 45 mm out from the centerline of the rim. Correct offset is necessary for clearance from suspension parts, brake calipers, and fenders and for proper handling.
8Jx18 ET55 = 8" wide rim. J type bead. 18" wheel diameter. ET55 = 55 mm positive offset