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Andy_L
13-08-07, 01:53 PM
Picked up a set of 5 GM Ronal 3 spoke jobbies on the weekend and very happy BUT they've got stamped on them ET 47.5.

WTF does this mean???

Now you see why I put this in the muppet corner! :thumb:
Welsh Dan
13-08-07, 02:05 PM
Its the offset of the rim, et45 to et49 is generally vauxhall fitment.

Its something to do with the distance between the centre of the rim, and the hub face.


http://www.tirerack.com/wheels/tech/techpage.jsp?techid=101
Stuart
13-08-07, 02:14 PM
they be early 3 spokes before GM went down their 45/49 route.
Andy_L
13-08-07, 04:06 PM
Ah ok thanks for that.

So why did GM faff about with offsets?? Why not all 49mm??
Welsh Dan
13-08-07, 04:41 PM
I've got about 9 ET47.5 ones lol.

I don't know why they produced them in different offsets, but I'm guessing they were cheaper to produce in ET49 later on.
craig green
13-08-07, 04:48 PM
et47.5 are off GSi's & SRi's. et49mm ones are SR & GTE ones.

It was because of the different brake calipers on GSI's. Whats 1.5mm these days?
Martin
13-08-07, 05:05 PM
I've got about 9 ET47.5 ones lol.

I don't know why they produced them in different offsets, but I'm guessing they were cheaper to produce in ET49 later on.

anyspare center caps?lol
Welsh Dan
13-08-07, 05:06 PM
a couple lol.
Martin
13-08-07, 05:38 PM
me needs four lol
Welsh Dan
13-08-07, 06:13 PM
i'll have a root around.
Stuart
13-08-07, 06:20 PM
Whats 1.5mm these days?


a 100% improvement if youre Lee...
Lee
13-08-07, 06:29 PM
a 100% improvement if youre Lee...

LMFAO. Your razor sharp wit exceeds your personal beauty, but not by bloody much!
Andy_L
13-08-07, 09:52 PM
Whats 1.5mm these days?

Depends whose asking lol
SRimon
13-08-07, 10:25 PM
et47.5 are off GSi's & SRi's. et49mm ones are SR & GTE ones.

It was because of the different brake calipers on GSI's. Whats 1.5mm these days?

didnt no that!:)