14 replies to this topic

[JimmyJamJerusalem]

So yes, I'm looking at alternative wheels for my VX.

Was going for the GTR's but now I'm very much liking the ATS DTC wheels.

Rial GTR

ATS DTC - - (tyre sizes)

Anyway....

My standard front tyre is 195/50/16 so to stop my abs going mental I want to try and stay as close to this diameter wise.... Is that correct...?

The GTR's use 205/45/17, but ATC use 205/40/17. Both use 235/40/17's on the back.

Using this handy calculator link would you recommend the 40's or the 45's...? 40's seem closer to orignal diameter, but are smaller that original which may make the abs throw a wobbler. 45's slightly larger, and still within the tolerance within the calculator...

What you think guys?

[darronwall]

i have 205 50s on front and all is good except for a little fouling on full lock,i think the car is less prone to understeer too,if you need some yoko 195 048s for the front i have some that maybe cheap

[Crabash]

I made this list and posted it some time ago, might help. If you can't get tyres of the same circ I would try and balance them, based on size ratio front to rear. Specification Sidewall Radius Diameter Circumference Revs/Mile Standard 175/55-17----3.8in----12.3in---24.6in-------77.2in-------821 195/50-16----3.8in----11.8in---23.7in-------74.4in-------852 225/45-17----4.0in----12.5in---25.0in-------78.5in-------808 Fronts 195/55-16----4.2in----12.2in---24.4in-------76.8in-------825 205/45-16----3.6in----11.6in---23.3in-------73.1in-------867 205/50-16----4.0in----12.0in---24.1in-------75.6in-------838 205/45-17----3.6in----12.1in---24.3in-------76.2in-------831 205/40-17----3.2in----11.7in---23.5in-------73.7in-------860 215/45-17----3.8in----12.3in---24.6in-------77.3in-------819 Rears 235/40-17----3.7in----12.2in---24.4in-------76.7in-------827 235/45-17----4.2in----12.7in---25.3in-------79.6in-------796 245/40-17----3.9in----12.4in---24.7in-------77.6in-------816 From what I can make out that means either ... Front----------Rear 205/40--------235/40 <<<<Looks better match to me for VXR 205/45--------245/40 <<<<Better for normal vx but fouling issues with 245 rear? not sure. 205/45--------235/45 <<<<Not as good circ but less chance of fouling? Met a guy with the 205/40----235/40 combo on a NA in germany this year, he said he had to disable the ABS but that combo worked fine with the VXR ABS unit.

Edited by Crabash, 22 December 2009 - 09:52 PM.

[VIX]

Although they're great looking wheels which I really fancied a few years back before the TDs became available, IIRC there were a couple of issues with the DTCs as a result of which only a handful have appeared on VXs here even though they are popular in Germany and were even available in the Speedster owners forum shop: 1. They were not available in the correct offsets. 2. They were deemed to be a bit too soft for extensive use on British pot-holed roads. This could have now changed but you might want to be aware.

[G-Bob]

Although they're great looking wheels which I really fancied a few years back before the TDs became available, IIRC there were a couple of issues with the DTCs as a result of which only a handful have appeared on VXs here even though they are popular in Germany and were even available in the Speedster owners forum shop:
1. They were not available in the correct offsets.
2. They were deemed to be a bit too soft for extensive use on British pot-holed roads.
This could have now changed but you might want to be aware.

Someone posted a picture of his car with DTCs on it a while back and it looked immense!


Just found it Lovely wheels

Edited by gbobm, 23 December 2009 - 09:18 AM.

[Mike (Cliffie)]

Man up and switch the ABS off Jimmy, you'll be seconds quicker through Maggots and Beckets.

[dw1]

Man up and switch the ABS off Jimmy, you'll be seconds quicker through Maggots and Beckets.

Jimmy why not just switch off the ABS for good, at least the braking will be predictable then and you wont have to worry about will it/wont it kick in.

Edited by dw1, 24 December 2009 - 11:24 PM.

[JimmyJamJerusalem]

Man up and switch the ABS off Jimmy, you'll be seconds quicker through Maggots and Beckets.

Jimmy why not just switch off the ABS for good, at least the braking will be predictable then and you wont have to worry about will it/wont it kick in.

The VXR abs unit is not intrusive at all, and I've never had to turn it off. That said, I don't think I can ever recall a situation where it has kicked in, so maybe it doesn;t even work...?

[MartinS]

Those DTC ones are meant to be fragile, one guy who had them on the site, even suggested that when buying them, buy spare wheels! I have 205 45 16 tyres and have never had any problems in any way on the front. I also have the vxr abs unit, and though it does still have the odd paddy (hitting small bump while braking hard), is good enough that I actually do turn it on all the time on the road (the original was permanently turned off). On track, it is always off. Martin s ps Stop making your car better all the time, makes me feel that I oiught to be doing something to mine!

[VIX]

I also have the vxr abs unit

Is it plug and play or do you need to get Lotus to program it? I've never been entirely happy with having ABS permanently off on the road.

[MartinS]

2 minutes to fit, then you need someone with a lotus tech 2 to get rid of the abs light (Lotus delares and independents). It basically shows some minor error that when cleared solves the problem. I would never say its perfect, and some say it didnt make much difference, but the mere fact it was designed for the 16/17 combination and checks all wheels individually not just pairs has to make it better (the original is 2 point abs the vxr is 4 point). I'm certainly happy with it enough to turn it on on the road all the time. Martin s

[dominik]

The ATS DTC Wheels have been available in two group buys in Germany .
And some tuners offer them seperatly.
These rims are lightened and with the correct offsets for speedster / vx220.
All the DTC rims that fit the VX/Speedster come without german TüV papers, they have no numbers and marks on the rims, so that they are not street legal. I don´t know if that´s necesary in GB.

Group buys
7,5 x 17 ET 20
9 x17 ET 30
wheigts here front 6,9 kg , back 8,8 kg

projekt opel in the midlle of the page
7,5 x17 ET 25 front 6,6kg
9 x 17 ET 25 back 9,0kg

On the ATS homepage you can´t find the rims in the correct dimension for the VX or the speedster.

(Does offset mean the same than ET Einpresstiefe in mm)

I personally do not think that the rims are fragile, the small curvy roads in the area I live ( Black forest) are covered with holes and bumps, and I have no problems with the rims.
Only the quality from the carbon lookalike center cap , is very bad.
With slight modifications you can use the ones from the oem rims, which I personaly prefer.

Edited by dominik, 29 December 2009 - 06:22 PM.

[VIX]

2 minutes to fit, then you need someone with a lotus tech 2 to get rid of the abs light (Lotus delares and independents).

Thanks Martin, mght have to add it to the list ...

Steve

[Steve B]

2 minutes to fit, then you need someone with a lotus tech 2 to get rid of the abs light (Lotus delares and independents).

Thanks Martin, mght have to add it to the list ...

Steve

If there is ever a group buy for the module then I'll want my name down

[Dominique]

Those DTC ones are meant to be fragile, one guy who had them on the site, even suggested that when buying them, buy spare wheels!

I have 205 45 16 tyres and have never had any problems in any way on the front. I also have the vxr abs unit, and though it does still have the odd paddy (hitting small bump while braking hard), is good enough that I actually do turn it on all the time on the road (the original was permanently turned off). On track, it is always off.

Martin s
ps Stop making your car better all the time, makes me feel that I oiught to be doing something to mine!

I have the same experience as MartinS regarding ABS units (and his last remark ), and only turn ABS off at tracks.
I've driven 205/40R17 - 245/40R17 road tyres and have currently 205/40R17 - 235/40R17 R888's. I've tried to match the diameters of the tyres as good as possible with the oem ones. I'd rather have 205/45 fronts, but that size is not available in 17" for semi's.

There's quite a few of the Dutch driving the DTS's. I've never heard of someone damaging one.
However, they are being sold as track only rims. Also for BMW's and Porsches and these are far heavier than our cars. Obviously forces on the rims are much greater when driving against a sidewalk or driving into potholes wiz zeas heavy German cars.
I've purchased mine from Dempert in Germany and they were delivered with a 9 page TUV document.
The 9" rear rim is an off the shelf one, but they (ATS) had to made a special batch for the fronts because of the funny offset.

I found a picture which shows all texts on the outside. There's also texts on the inside of the spokes, but can't find a pic of that. I'll try to remember to make a photo when I take one of them off.

There's only one guy in NL that has the Rials. No futher info.

VIX, good luck with your choise.