: ZR - wheel dimensions: offset, width, etc.


LostBok
13-11-2005, 10:09
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??? ?

http://img.photobucket.com/albums/v148/LostBok/MGZRalloy.jpg

thanks,
LostBok

cjmillsnun
13-11-2005, 10:20
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

LostBok
13-11-2005, 13:36
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...

M4RTIN
13-11-2005, 13:38
can't you use some spacers to move the wheels out? someone should make them for the golf

LostBok
13-11-2005, 17:59
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?

M4RTIN
13-11-2005, 18:03
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

Stu
13-11-2005, 18:04
Spacers will decrease the ET number.

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

ashy
13-11-2005, 18:09
Maybe this will help.

http://www.miata.net/garage/offset.htm
http://www.1010tires.com/WheelOffsetCalculator.asp

M4RTIN
13-11-2005, 18:10
that offset calculator is very handy

LostBok
13-11-2005, 19:26
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?

LostBok
13-11-2005, 19:28
Spot the difference:

http://img.photobucket.com/albums/v148/LostBok/BBS_RX214.jpg

http://img.photobucket.com/albums/v148/LostBok/MGZRalloy.jpg

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" ;)

M4RTIN
13-11-2005, 19:28
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

LostBok
13-11-2005, 19:54
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...

Stu
13-11-2005, 19:56
A 205 wide 16" tyre is the same width as a 205 wide 17" tyre, so where have you got the difference from?

M4RTIN
13-11-2005, 20:02
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

LostBok
13-11-2005, 21:41
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...

LostBok
13-11-2005, 21:51
What's the normal retail price on these?

Just trying to make sure I'm not being ripped off!

G13SJC
13-11-2005, 22:07
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.

LostBok
13-11-2005, 22:27
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...

LostBok
15-11-2005, 13:38
okay - here's a puzzler - what will the "centre bore" be?

G13SJC
15-11-2005, 13:54
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.



No probs - I got confused too. You should be able to get a complete set with tyres for about 150. If they are in A1 nick and have new tyres (say more than 6mm) then they may be worth 200.

I've got a single hairpin in A1 condition with tyre. PM me if you need it.

LostBok
16-11-2005, 08:44
G13 - what tyres would those be??!? For a full set of tyres, I'm looking at about 300-360!

205/45ZR16 Toyo Proxes T1-S do not come cheap!

I'm probably going to be able to get soem EagleF1's or Exalto's cheaply, so it's just the alloys I'm after... if I can confirm the centre bore will fit, then I might try getting a set, but I think the MG centre bore is 56mm, while the VW's are 57.1mm :(