Hi, after some advice on wheels, I've read up on here that the offset is important on Ghia wheels, I've narrowed it down to the following three choices as I want to keep the axle length the same and don't want to run a narrowed beam:
- Empi 8 spoke replicas, we get them here in the UK in 5.5" wide, and 30 or 35 offset
- Porsche 2.0 replicas, 5.5" wide with either 35 or 40 offset
Will the 30 offset be enough? or should I go for the 35 or even 40 to be on the safe side?
thanks
Carl.
Wheels...
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helowrench
- Posts: 1925
- Joined: Wed Aug 11, 2004 6:20 am
Re: Wheels...
you need as much offset as possible.
I know there is a thread over on Samba that covers most of this.
Rob
I know there is a thread over on Samba that covers most of this.
Rob
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Marc
- Moderator
- Posts: 23741
- Joined: Thu May 23, 2002 12:01 am
Re: Wheels...
Think of it this way. Stock is 4½", ET46 offset.
For a rim that's 1" wider, you'd need ½" less backspace for the inner sidewall to end up the same distance from the beam (with a tire size/profile that "bulges" comparably to the stock setup) => ET33.
Go with ET35 and you might need to crank in the Pitman arm stops just a little (bigger turning circle) depending upon the tire size/profile. But the outer sidewall is going to be slightly more than an inch closer to the fender (11mm + ½").
ET40 would make things 5mm better at the fender and 5mm worse at the beam.
In the rear you can go in further before there's any clearance problem, and at least ½" more is available by grinding away the upper snubber pad, so it's not as critical as the front. If you've got ¾" clearance between tire and fender with stock rims/tires, a 5½" ET40 should just fit (6mm + ½").
If you could borrow an ET34 5½" Sports Wheel somewhere, with a tire close in size to what you'd like, that should make it pretty easy to see what'll fit before you order new rims.
For a rim that's 1" wider, you'd need ½" less backspace for the inner sidewall to end up the same distance from the beam (with a tire size/profile that "bulges" comparably to the stock setup) => ET33.
Go with ET35 and you might need to crank in the Pitman arm stops just a little (bigger turning circle) depending upon the tire size/profile. But the outer sidewall is going to be slightly more than an inch closer to the fender (11mm + ½").
ET40 would make things 5mm better at the fender and 5mm worse at the beam.
In the rear you can go in further before there's any clearance problem, and at least ½" more is available by grinding away the upper snubber pad, so it's not as critical as the front. If you've got ¾" clearance between tire and fender with stock rims/tires, a 5½" ET40 should just fit (6mm + ½").
If you could borrow an ET34 5½" Sports Wheel somewhere, with a tire close in size to what you'd like, that should make it pretty easy to see what'll fit before you order new rims.