blnewt

iTrader: (13)

Those won't stick out they'll be pulled into the fender so you'd probably want to add spacers to bring them closer to flush. The OE takeoffs w/ new tire would be a better plan as long as the tire sizes are compatible.

blnewt

iTrader: (13)

Natalie's running 255s on 10.5" +45s all around, here's the fit
https://www.myg37.com/forums/picture...g37-sedan.html
A 10" +35 would get the same fit since she's running a spacer in front.
It's going to be tight in front but it's been done.

TommyBluez

Ok... so if I'm understanding this correctly....

Offset is the measurement from centerline to the mounting on the hub.

So if I go w/ a 17" x 7.5 - +45mm - thats OE.

If I were to go w/ a 17 x 17.5 +50mm, that'll stick out further (or is it inverse, it'll be pulled in?)

As such - if I were to go with an 18 x 8.5 rim - woudl the offset need to go up or down to remain flush? I appreciate your input ...

I know enough on and off about cars - but custom wheels/offsets/etc. is one thing I am definitely out of my element on.

Thanks!

blnewt

iTrader: (13)

Here's a good calculator, just plug a couple offset & width numbers in there for a good idea of how they relate.
https://www.myg37.com/forums/tire_rim_calculator.php
The more positive the offset the more the mounting hub goes toward the outer face of the wheel so it will pull the wheel in as you go more positive w/ the offset.

Scoobykim

iTrader: (3)

Would fitting a 20x10.5 +10 with 295/30 tires be possible in the rear of a coupe?

TommyBluez

Thanks for that tool!

So I just calculated going from
17x7.5, +45, 225-55-17
to
18x8.0 +50, 225-50-17
Results:
Inner Clearance:
11.35mm less
Outer Position:
extend by 1.35mm
Diameter difference:
0.11" (0.42%)

Inner clearance, I'm assuming is the clearance between the flat portion of the tread and the wheel well?

Outer position would be how much further the face of the rim/tire extend past where it's at now, correct?

So ultimately - this would be a very comparable upgrade to overal diameter if I'm thinking about this correctlY?

blnewt

iTrader: (13)

You are correct, and good to go

kevshiau

iTrader: (15)

I have a coupe with oem bbk going air soon and was planning on refinishing and re-barreling my wheels. My current wheel set up is 20x9.0 +25 R-disk and 20x10.0 +30 O-disk. I was wondering what offset I would need on this wheel with to achieve the 10.5 +15 square setup look, and what tire sizes I would need to make them fit?

AroundTheG37

iTrader: (8)

Question. Assuming offset is the same, does a 9 inch wheel with a +35 offset have more brake clearance than a 8.5 inch wheel with the same +35 offset (or is it the other way around?)

Thanks.

AroundTheG37

iTrader: (8)

Also, when it comes to center bore, do wheels made for the 5x114.3 bolt pattern fit all the cars associated with it (350z, g37, mustang, wrx, camaro, etc), or are some specifially made when it concerns how the wheel will sit on the hub? Meaning, can I throw one set of wheels from a car with the 5x114.3 bolt pattern to another car with the same 5x114.3 bolt pattern. Thanks.

kevshiau

iTrader: (15)

^You can use hub centric rings if the bore is too large

hinomura

iTrader: (4)

I realize I should have asked this question here. I have a 2011 sport sedan lowered on Eibachs and I have camber kits all around. I've always been in love with the 370z sport mantis wheels. What steps would be necessary to get the 370z rear wheels to work without rubbing? I used the calculator and it said that the new setup would extend 39mm more than the OEM 18" sport wheel. This was calculated using: 18x8.5 +50 245/45/18 and 19x10 + 30 275/35/19 as the values. I used a tape measure and found that I have about 1 1/8" horizontal clearance from the 18" rim to the inner fender. 39 mm is roughly 1 1/2" inches. So I still need to clear about 3/8". I know I can get some distance back either through camber or by getting the rear fender pulled. I know I'll definitely be shaving the rear fender lining. My current camber in the rear is -1.4. Would you be able to give me an estimate on whether I would need to pull the fender (and if so how much) if I maxed the camber at no more than -2.0?

blnewt

iTrader: (13)

Check my reply in your other thread
https://www.myg37.com/forums/brakes-...-on-sedan.html

blnewt

iTrader: (13)

Only concern is if the wheel has a smaller bore than 66.1mm, most aftermarket wheels have bores in the 73mm range so it's usually not a problem but you need to be aware of it.

blnewt

iTrader: (13)

A +35 offset brings the hub mount 35mm toward the front of the wheel from centerline, if the wheel is a 1/2" wider it will have an additional 6mm clearance for the brakes. There's 1/4" more (6mm) on both sides of the wheel for every 1/2" wider.