wheel offset help
 

I have a set of 19" tsw nurburgring's on my car. they were on it when i bought it so i know nothing about them. rear is 10.5" wide and front is 9.5". my question is, how do i figure the offset on thses wheels so i know what size spacers i can put on the car when i put springs on, or if i will have any rubbing issues when lowering it?

I know thats a pretty general question but any help is appreciated.

ALSO, if my offset turns out to be close to stock, what size spacers are u lowered guys running to get a real aggressive stance, but also avoiding rubbing?

well to calculate it, you would have to:

measure the overall width of the wheel (remember, just because a wheel is 18x7.5, does not mean that the OVERALL width is 7.5”. It means that the measurement between the outboard flange and the inboard flange is 7.5”). Next, divide that width of the wheel by two; this will give you the centerline of the wheel.

Overall width/2 = Centerline

After determining the centerline, measure from the hub-mounting surface of the hub to the edge of the inboard flange (if the wheel were laying flat on the ground – face up – your measurement would be from the ground to the hub-mounting surface). This is your back spacing.

Back spacing - Centerline = Offset

so im gonna need to take the tire off for sure to determin this?

well waht you could do is guestimate with the tire on..

i would measure with the wheel off the car (tire still on the wheel). TSW doesnt offer every possible offset, so you'll be able to measure this, and then compare your results with the offsets TSW offers for your size wheels.

basically if you get a +21 offset, and you see taht TSW offers +12, +19, +28, +35
you can assume you have the +19 offset. this will give you an idea without having to have the tires removed.

I dont know TSW's offset offering however if they only offer a couple diff ones, this shouldnt be difficult to figure out :tup:

some manufacturers will stamp the offset on the wheels. Genereally behind one of the spokes. You could maybe look for it.

Either that or you dont need to know the offsets. Lower the car. See how much room you have. pick a spacers.

how wide (spacer wise) can you SAFELY go. is anything over 30mm too much?

I checked and it looks like they only make a +40 in the 19x9.5 and a +27 in the 19x10.5. So I would assume those are your offsets if you are sure of the width.

Look and see if there are any spacers on the car?

if you're going to lower it i would do a 15mm front and 15mm on the rear.

your final offset would be ET25 / ET12 for a pretty aggressive finish.

but if that was my car, i would probably just leave it stock height and use those wheels without spacers. :)

I think they look great when they sit down like another inch. just curious, why would you leave it stock height? just a preference thing? or from a performance standpoint?

for me this is 100% from a functional standpoint for street.

If you're curious about the offset just for the sake of getting spacers, why don't you lower the car then measure how much you want to push the wheels outward towards the fenders?

^^ why didn't i think of that :tiphat:

edub- post up more picts of your car with those wheels. :D

Prolly cus you dont read the responses so well!

HAHA it appears so daisuke149.

kenchan: here's a link to my photo thread i put up a couple days ago:
http://www.the370z.com/nissan-370z-p...-new-ride.html

hey looks good, thanks for the link. yah, even at stock height i think you can push out the rear 10mm and look great. :p Kic's makes built-in type for 10mm that should work with your wheels.

im hoping to get a set of these wheels next season in either gunmetal or bronze and have them painted matte dark-graphite professionally. :D

You definately will not regret getting those. better post up some pics when you get em on there.

quick question, might be a dumb one... but how do i know which spacers will and will not work on my wheels? like as far as style, or company?

just read read read and read again the370 forums. :tup:

for me i look at the stock wheels and size look at the wheel to fender arch distance and just eyeball a thickness. then physically try a set on and see.

i have a variety of offset spacers in my collection so this is how i know. :p