ZR - wheel dimensions: offset, width, etc. - MG-Rover.org Forums
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post #1 of 22 (permalink) Old 13-11-2005, 10:09 Thread Starter
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Thumbs down ZR - wheel dimensions: offset, width, etc.

I've seen some wheels advertised and they are quoted as being "genuine Rover MG ZR wheels", but the seller doesn't know the dimensions of the wheels.

What is the offset and width on the standard 16" wheels that go on ZR's?

And the PCD? 4x??? ?



thanks,
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post #2 of 22 (permalink) Old 13-11-2005, 10:20
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They are standard ZR wheels mate.

They are Hairpins, as fitted to the MG ZR and MG ZS

Edit 6.5J x 16

4 x 100 pcd

offset ET45
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post #3 of 22 (permalink) Old 13-11-2005, 13:36 Thread Starter
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thanks CJ, that's the sort of info I was after... they look just like the BBS RX's that I was after for my Golf Mk3. (sorry, yes, I'm a dubber, rather than an MG owner).

Slight concern they're 6.5J - I was after 7J, but that should still fit the 205/45ZR16 rubber I was going to put on them.

Main problem is going to be that I need wheels with ET38, rather than ET45 offset.

Thanks for the prompt info though...
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post #4 of 22 (permalink) Old 13-11-2005, 13:38
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can't you use some spacers to move the wheels out? someone should make them for the golf
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post #5 of 22 (permalink) Old 13-11-2005, 17:59 Thread Starter
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This where my knowledge is slightly lacking - do spacers increase or decrease the offset?

If the offset's already ET45 and I need ET38, aren't spacers just going to push them further and further away from the spec I need?

WRT to the alloy width, would 6.5J be a noticeable difference to 7J? Performance? Feel? Handling? I'd still be wanting to put the 205 width rubber on them (as mentioned before) and according to the Toyo site (http://www.toyo.com/tires/tire_specsheet.cfm?id=20) their 205/45/ZR16's will fit on 6.5J-7.5J, but with what sort of results?

Are the MG "Hairpin" alloys the same as the BBS ones I've been seeing or just very similar?
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post #6 of 22 (permalink) Old 13-11-2005, 18:03
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they just look like the bbs ones..probably made in eastern europe or china


. the smaller the offset number the further away from the hub the centre is, it makes no sense to me tbh lol.

so a et38 will be nearer the edge than et45, so if you use a wide wheel with a low offset it will scrub on the arches


have a google, theres a lot of websites with info.


btw. my tyres are 205x50 r16 and that gives a reasonable ride.. but obviously my alloys are standard fitment so they are bound to work lol
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post #7 of 22 (permalink) Old 13-11-2005, 18:04
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Spacers will decrease the ET number.

But don't do it IMO as you will only be putting extra strain on the nuts/bolts.

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post #8 of 22 (permalink) Old 13-11-2005, 18:09
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post #9 of 22 (permalink) Old 13-11-2005, 18:10
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that offset calculator is very handy
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post #10 of 22 (permalink) Old 13-11-2005, 19:26 Thread Starter
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But given that I'd be going from 7J to 6.5J, shouldn't I add 6mm to the offset anyway - so I should be going from ET38 7J's to ET44 6.5J's to keep the wheels in the same place...

That means there's only a 1mm difference....


Also - if I'm staying on 205/45ZR16 tyres? Will the narrow alloys really mess things up?
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post #11 of 22 (permalink) Old 13-11-2005, 19:28 Thread Starter
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Spot the difference:





All I can see is that the BBS has a slightly more noticeable inside lip... just behind the "spokes"....

Cue all the smart-****s in the house say "the bottom one's bigger than the top one"

Last edited by LostBok; 13-11-2005 at 21:50.
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post #12 of 22 (permalink) Old 13-11-2005, 19:28
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Quote:
Originally Posted by LostBok
Also - if I'm staying on 205/45ZR16 tyres? Will the narrow alloys really mess things up?


not really.. if you have 6.5" then you use 205's, i cant think of any other tyre to use.. thats what mine have
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post #13 of 22 (permalink) Old 13-11-2005, 19:54 Thread Starter
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Thanks Martin - what profile tyres have you got?

So if I've got this right: moving from a 7J ET38 to a 6.5J ET45 will give me 13mm less width on the outside and 1mm less clearance on the inside...

BUT some previous (17") wheels that I had on the car, had 8.6" wide* rubber (205/40ZR17) and the new tyres are only 8.2" wide* - so I've got 0.2" (5mm) more clearance on each side of the tyre anyway, so I seriously doubt that the 1mm less clearance is going to trouble the Koni's too much!

* figures taken from the tech spec on the Toyo site (since I have Toyo Proxes T1-S).

Only downside is that I'm whittling away the total width of the track of the car...
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post #14 of 22 (permalink) Old 13-11-2005, 19:56
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A 205 wide 16" tyre is the same width as a 205 wide 17" tyre, so where have you got the difference from?

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post #15 of 22 (permalink) Old 13-11-2005, 20:02
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Quote:
Originally Posted by LostBok
Thanks Martin - what profile tyres have you got?

205x50 R16 are my tires..these are the original ones too so they were the proper fitment
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post #16 of 22 (permalink) Old 13-11-2005, 21:41 Thread Starter
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Stu - I'm not sure why - I'm just taking the numbers from the Toyo Proxes spec sheet - every "205 width" has a slightly different inflated width...

edit: here's the Toyo spec sheet http://www.toyo.com/tires/tire_specsheet.cfm?id=20

Martin - thanks - I was just worried about the handling getting wobbly if I had pretty fat tyres sat on the minimum width wheel allowed (for 205's) AND a higher tyre wall, but I was after 45 profile, so that shd be FINE since yours are on 50 profiles...

Last edited by LostBok; 14-11-2005 at 08:08.
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post #17 of 22 (permalink) Old 13-11-2005, 21:51 Thread Starter
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What's the normal retail price on these?

Just trying to make sure I'm not being ripped off!
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post #18 of 22 (permalink) Old 13-11-2005, 22:07
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Quote:
Originally Posted by LostBok
What's the normal retail price on these?

Just trying to make sure I'm not being ripped off!
From www.blackcircles.com anything from 38 to 120. I bought Goodyear F1's in this size and paid 80 per tyre.
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post #19 of 22 (permalink) Old 13-11-2005, 22:27 Thread Starter
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Sorry - G13 - most of this thread has been about the Hairpin alloys , not the tyres - I also use blackcircles to price up rubber (great site!)... I'm just trying to make sure I don't over-pay for the rims, so that's wha tI was after a price on.

Apparently they were offered at about 1000 extra on the cars when new, but I've NEVER used that as a guide - don't worry - I'm not a complete mug I'm not going to pay anything LIKE that... I'm looking for a cheap alternative to my 400 BBS RX's...

Last edited by LostBok; 14-11-2005 at 08:05.
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post #20 of 22 (permalink) Old 15-11-2005, 13:38 Thread Starter
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okay - here's a puzzler - what will the "centre bore" be?
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