84 replies to this topic

[jbudgie]

Wow,totally different wheel and tyre sizes to the typical ones used in the UK.

Please advise the handling characteristics with this set up.

Paul

Excellent handling
Turn in is much improved, grip levels are in another league
I used to frequently drift the vx on the standard rims/tyres wet and dry but your going a lot faster to do the same with this set up
The lighter rims also improve the ride, for example, we have a lot of those raised ribs around here and they are a lot less noticeable

I have yet to fit my first choice tyre the R1R's as the rears weren't available when I needed them, so just running falkens as a stop gap.
I was worried that the wider tyres would be a problem in the wet but having run a lot of miles now in 'monsoon' conditions I can report excellent grip in standing water, minor floods and the occasional river !! I'm planning to run the Falkens through until spring now and revisit the R1R's then.

ABS hasn't been a problem either

Would that be the Falken 452's ?

[RYN]

So is everyone going to go for et20 atthe front and et30 at the rear?

[Steve B]

Ok guys I've been in touch with Chris at Speedline who has been very helpful & given me all the original specs of the VXR wheels which are

2x Front 7x16" ET25, 5x110 pcd, 65.1mm centre bore (Speedline Corse Type 2110 SL1430)
2x Rear 8x17" ET33, 5x110 pcd, 65.1mm centre bore (Speedline Corse Type 2110 SL1445)

So none of the previous dimensions we had were right but weren't that far off really. So now people can take their choice in the group buy if they want the exact fit of the VXR wheels order as detailed above or if you want a few more mm inner arch clearance & a bit wider track go for

2x Front 7x16" ET20, 5x110 pcd, 65.1mm centre bore
2x Rear 8x17" ET30, 5x110 pcd, 65.1mm centre bore

I did ask just on the off chance if they would make any more sets & they said that they would need an order of 100 wheels to get them cast in Italy at the factory (for the rears) but funnily they have some fronts left!

So best to stick with the Compomotives then as only need a few more sets now to get our discount & they are lighter weight as well.

Hope this helps everybody.

Very interesting

Next question - the VXR spec front ET25, I thought ET25 didn't allow 4pot AP's? But I thought they were an option for the VXR? p.s. added myself to the group buy Think i'll go the wider track all round.

Last Question - any pictures of the Satin black and Grey wheels? Think I want Grey as long as its dark enough.

[iVXT]

AFAIK I thought 4 pots weren't an option on the vxr only cross drilled discs with standard calipers.

[Andrew aka Stuwy]

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

BUMP for me so I can find it again soon...

[VX220BOB]

I have been reading this thread and others with interest regarding wheel and tyre sizes and I can see this subject has been well documented.

 

As a newbie to the VX  I have a chance of a set of TD Monza R 17" x 7J with 35ET and going to fit 225-45-17 on the rears and 205-45-17 on the fronts.

I am currently using the std VX 17" 35et wheels, with 225-45-17 on the rears and 175-55-17 with 26et on the fronts.

 

Firstly has anyone fitted a 17" x 7" with 35et on the front and rears and not any rubbing issues with the anti roll bar or the tyre catching the inner liner when on full lock with my proposed front tyre size of 205-45-17 or should I be better with 195-5-17 on the fronts.

 

And will there be any noticeable steering and performance issues or ABS issues with this wheel/tyre combination .

 

Cheers

 

Bob

[Nev]

From time to time I get asked for my offset on Nipper. They are as follows (NB: both front and rears have spacers to ensure no rubbage on the chassis). Bear in mind you will need bodywork mods to fit these in. Front wheel arch liners will rub a bit on max lock and rears fit without any rubbage, ever with extreme cornering.

 

Wheels/Tyres Front / Rear Tyre Width Tyre Profile % Tyre Diam (inches) Wheel Width Wheel Offset Wheel Weight Wheel Manuf. Total Diam (mm) Rolling Circum F/R % Diff In Circum Fitting Diagram compared to SteveA PCD Comments Pro Race 1.3 HP Sliver (Rimstock) F 245 40 18 8.5 J ET15   TD 1.3 637 2001 2.0 Link 5 x 110 Retro fitted 10mm spacer Pro Race 1.3 HP Sliver (Rimstock) R 285 35 18 10 J ET15   TD 1.3 649 2041   Link 5 x 110 Retro fitted 3mm spacer

 

 

Excuse the formatiing, that was the best I could do before I got pissed off with cut and paste, PM me for details if u really need to know.

Edited by Nev, 19 July 2013 - 08:20 PM.

[Paulus H]

Wow Nev,

 

So taking into account of the spacers, effectively ET5 front and ET12 rear!

 

Kind regards, Paul

[Nev]

Wow Nev,

 

So taking into account of the spacers, effectively ET5 front and ET12 rear!

 

Kind regards, Paul

 

Yep, spot on.

 

Grip is (relatively to OEM) sensational when warm, terrible when wet - but that's the price of modding, what you gain in 1 hand is taken away in the other !

Edited by Nev, 21 July 2013 - 11:23 AM.

[davemate]

Sorry to drag this one up again,been doing some research for a little project... Would a rear et38 cause problems?

[Andrew aka Stuwy]

Firstly has anyone fitted a 17" x 7" with 35et on the front and rears and not any rubbing issues with the anti roll bar or the tyre catching the inner liner when on full lock with my proposed front tyre size of 205-45-17 or should I be better with 195-5-17 on the fronts.

 

 

I have a 17" 7j et20 on the front and I run a 205/40 and the tyre is close, but no rubbing.. no idea if that helps you

[davemate]

Sorry to drag this one up again,been doing some research for a little project... Would a rear et38 cause problems?

I am on CF setup and run tyres like r1r rather than 888s if that helps anyone answer my question?

Edited by davemate, 06 August 2013 - 12:56 PM.

[techieboy]

I am on CF setup and run tyres like r1r rather than 888s if that helps anyone answer my question?

Depends on the width of the rear wheel (and they tyres you fit). Sounds okay for a standard width wheel though.

[Andrew aka Stuwy]

 

Sorry to drag this one up again,been doing some research for a little project... Would a rear et38 cause problems?

I am on CF setup and run tyres like r1r rather than 888s if that helps anyone answer my question?

 

 

from what I understand the higher the offset the more it shall stick out from the hub. my rears are et30 8j and I run a 235 tyre and its very close to the line of the body work. If you run a 225 tyre so 10mm less and have you wheels spaced out another 8mm in offset (et38) I don't see why it would not fit.. I think....

[davemate]

I am on CF setup and run tyres like r1r rather than 888s if that helps anyone answer my question?

Depends on the width of the rear wheel (and they tyres you fit). Sounds okay for a standard width wheel though.

Thanks for the reply, so a move from a 7.5j to an 8j wouldn't really offer much in the way of an upgrade with this offset?

[davemate]

Sorry, vital bit of info left out, 8j e38 is what I am looking at.

Edited by davemate, 06 August 2013 - 01:19 PM.

[Andrew aka Stuwy]

what size tyres are you planning on using?

[davemate]

what size tyres are you planning on using?

235 or 245 I hope, wondering if 9j is actually more of a worthwhile upgrade from 7.5j. With the power of the Harrop, I just want better contact area.

[Andrew aka Stuwy]

Surly with tyres that size you will need to minamise the offset so it won't foul the body work. My et30 8j with 235 tyre is very close. I will double check my offset for you tonight but I think it's et30

[Andrew aka Stuwy]

Might be et35