84 replies to this topic

[RYN]

What offset would I need to have if I was going to get the wheels from the group buy? I would want the 16/17 set up?

[Dave E]

Original fronts were ET26 I believe but every aftermarket wheel I've seen were ET20 to accommodate bigger brakes. It also gives 12mm wider track which ain't a bad thing. The rears are ET35 but you can run ET30 which again gives a wider track, but unless you have a lot of negative camber on the rears, they may foul the bodywork.

[RYN]

thanks So if I go et20 on the front with 16 inch wheels and et35 on the rear with 17 inch wheels that should be fine?

[Dave E]

Yep

Offsets are discussed HERE

[Paulus H]

My 16/17 TD's were ET20 front and ET37 rear. New Compo's that go on tomorrow are ET20 front and ET35 rear. Both fronts were 7 inch wide. Rear TD is 7.5 inch wide Rear Compo' 8 inch wide, therefore the rears are going to stick out further than before.....

[RYN]

My 16/17 TD's were ET20 front and ET37 rear.

New Compo's that go on tomorrow are ET20 front and ET35 rear.

Both fronts were 7 inch wide.

Rear TD is 7.5 inch wide

Rear Compo' 8 inch wide, therefore the rears are going to stick out further than before.....

Any Pictures with them on the car yet?

Is having the rears 8 inch wide going to make them catch the body work?

[Paulus H]

Took delivery of wheels on Monday. Dropped them off with DerbyWheelSpecialist on Monday for further painting. DWS had to wait for a special tool to arrive from Germany to get the effect I was looking for. They should have been painted today and will be ready for fitting to car on Monday. As they have been on order for 3 months I am getting pretty keen to see them on the car. I very much doubt there will be a problem with them catching the body but will let you know one way or the other. The main reason I bought them was that they look really easy to keep clean. Having now seen the final production version in the flesh, I think they are going to be REALLY easy to clean. RE. another post I can never imagine buying white wheels! Have to admit white snow flakes look good while clean. Best regards, Paul

[iVXT]

My 16/17 TD's were ET20 front and ET37 rear.

New Compo's that go on tomorrow are ET20 front and ET35 rear.

Both fronts were 7 inch wide.

Rear TD is 7.5 inch wide

Rear Compo' 8 inch wide, therefore the rears are going to stick out further than before.....

Any Pictures with them on the car yet?

Is having the rears 8 inch wide going to make them catch the body work?

With the standard rear turbo alloy being 7.5 inch wide & the compomotive being 8 inch wide should we be going for a lower offset so the wheel is a little further away from the inner arch?

Edited by iVXT, 31 October 2010 - 12:11 AM.

[siztenboots]

IMHO et30 for the rear with even a STD 7.5j fitting , it is very common for the et35 to rub the chassis. I have both sizes and my net set I will go for an 8j

[iVXT]

So you would recommend going for 7x16 front in et20 & 8x17 rear in et30 then? Am I right in thinking that 7x16 & 8x17 would be the same as the factory vxr220 speedlines? Does anybody know what offsets the speedlines are & would it be better to match that spec exactly? Want to get this right for the group buy.

[Paulus H]

Yes that's the same size as VXR. Although I believe VXR used spigot rings/hub centrics??? Will find out tomorrow if wheels catch!! Best regards, Paul

[RYN]

So does anyone no what the offsets are for the vxr220 ? Really like these wheels but don't want to spend the money on wheels that may cause me problems further down the line? How much do most people lower the car ?

[vocky]

also which offset would be best for a 17" x 7J front wheel, same as the 16x7

7x16 front in et20 & 8x17 rear in et30

Edited by vocky, 31 October 2010 - 07:32 PM.

[RYN]

Has anyone been able to confirm the offsets on the speedlines for the vxr? and if they are defenatly 8 inch rears?

[iVXT]

Has anyone been able to confirm the offsets on the speedlines for the vxr? and if they are defenatly 8 inch rears?

Not found out about the Speedline offset yet, done loads of searching/googling & posted on group buy thread as well as earlier in this thread.

Hopefully we can find out. Somebody must know on here, anybody help?

Found a link saying they're 7x16 & 8x17 here http://www.vxronline...hread.php?t=136 also I remember finding a pdf of the original vxr220 brochure, sure it said same but can't find that link now.

Cheers.

[siztenboots]

Postby jasvxt on Thu Sep 27, 2007 1:35 pm Size front = 16" 7J Offset 26 Size Rear = 17" 8J Offset 35 PCD 5/110 Bore = 65.1 mm

[Paulus H]

You do realize that if you increase your track by using increased offset then your suspension is going to be softer?? That's not such a bad thing for a VX that is going to be used as a road car, might be a problem for a track car!

[JL37]

Hi ! Great looking wheels! It's true that a slightly wider track will slightly reduce the spring rating, but i would be amazed if anyone could detect the difference as it is very very small. On the other hand the increased track should give greater lateral stability . Remember the VXR wheels had a wider track , and that was a more track orientated car! Most track cars benefit from having a wider track as possible provided the change to the offset is nothing major. If you go crazy with offset changes you can introduce Bumpsteer, but the new wheels are very close, or can be exactly the same as the wheels specced by Vauxhall/lotus for the VXR. The VXR also ran 20mm closer to the ground so rubbing wheels shouldnt be a problem provided your spring rates are higher than standard. So just to recap, original Speedline VXR fronts are ET25, you can ask Compo for ET25 to exactly match the vxr wheel. OR, you can go for ET20, this is a slightly wider track, but will give more clearance for 4 pot brakes. The rears are ET35, the same as the VXR speedline. The group buy done before was for et20 fronts. Tms /Team Dynamics 1.2's 16" front = 7 j wide, offset/et 20 , 17" rear = 7.5 j wide, offset/et 35, Speedlines VXR's 16" front = 7 j wide, offest/ et25 17" Rear = 8 J wide , offset et35 Compomotive proposed 16/17" front = 7 j wide, offset et20 17" Rear = 8 j wide , offset et35 Tyre widths that can be run on these wheels are 195-225 on the front and 215-245 on the rear. Hope this helps! jason

[iVXT]

Postby jasvxt on Thu Sep 27, 2007 1:35 pm
Size front = 16" 7J Offset 26

Size Rear = 17" 8J Offset 35

PCD 5/110

Bore = 65.1 mm

Thanks for the info on these, do you have a thread link for this in case any more good info? Well done for finding. Also thanks Jason for the summing up the offsets.

So front et20 from et25 will make next to no difference handling wise other than will allow more clearance for/if you might get 4 pots in future. We might as well go et20 then just in case?

So rear et35 in 8j wide will clear inner arches without hassle as that is same as vxr speedline & I take it they don't catch or would et30 be better?

Thanks again everybody whose given input & sorry if were going on a bit about this but I want to get the best fit/handling possible from these & am sure other peeps in for the group buy would agree.

Cheers again.

[RYN]

Yes thanks for all the info being given its a big help! So by keeping to et35 at the rear thats not going to catch on inner or outer arch even with lowered suspension?