GTD Wheel hop/tramping testing

[monkeyhanger]

Jesus,

I hope you get something other than Bridgestone on your new car and give us all some peace...

So do I, can't you tell? 

If not, i'll give you first refusal on them when I swap them out for something with more grip. 

[205Rallee]

I am not disputing that some Bridgestone users have problems. But I didn't experience the problem before I wore them out and swapped them for PS3's. And the PS3's have a much better ride quality, problem solved for £400.

No road car is perfect, I'm fortunate enough to have access to some really nice and very expensive cars and I can quickly find a reason why I would be disappointed with them at £30k never mind £150k plus.

Not sure how qualified I am but I am an MSA licence holder and compete in hillclimbs , sprints and tarmac rallies and have a garage full of different compound race/rallytyres. I know that wheelspin will result in a rubbish time and I really am not interested in spinning the wheels on a Golf GTD on the road. It is after all a big heavy car as is the R and I've yet to see one of those been driven at more than legal speeds on the road. I wonder how long it would be before the clutch starts slipping in an R when practicing some "race mode" starts And that's before you find out how crap 19" alloys are on any real roads in the North of England, but hey who cares about unsprung weight just feel the bling! I'll get my coat.

[karlak]

I am not disputing that some Bridgestone users have problems. But I didn't experience the problem before I wore them out and swapped them for PS3's. And the PS3's have a much better ride quality, problem solved for £400.

No road car is perfect, I'm fortunate enough to have access to some really nice and very expensive cars and I can quickly find a reason why I would be disappointed with them at £30k never mind £150k plus.

Not sure how qualified I am but I am an MSA licence holder and compete in hillclimbs , sprints and tarmac rallies and have a garage full of different compound race/rallytyres. I know that wheelspin will result in a rubbish time and I really am not interested in spinning the wheels on a Golf GTD on the road. It is after all a big heavy car as is the R and I've yet to see one of those been driven at more than legal speeds on the road. I wonder how long it would be before the clutch starts slipping in an R when practicing some "race mode" starts And that's before you find out how crap 19" alloys are on any real roads in the North of England, but hey who cares about unsprung weight just feel the bling! I'll get my coat.

Wow,, I bet Lewis is quaking in his Formula 1 boots 

[monkeyhanger]

Grip aside, might be nice to swap Bridgestones for lower noise and a nicer ride anyway. If Ford can give you a tyre menu for the Transit van in it's higher trim levels, it is something VW could look to do for the GTD, GTI and R. I'd pay an extra £100 to get Michelin PSS over RE050s every time.

Yes, 19"ers are primarily for the looks (unsprung weight differences? Anyone telling us that will make a huge difference on the road is kidding themselves), and I wouldn't normally partake in a frivolous extra like that for what VW are charging for them, but i've come to really dislike the look of the Cadiz wheels on certain colours, especially the one i've chosen (Lapiz). If i'd have gone DBP I may well have stuck with the Cadiz.

[205Rallee]

Wow,, I bet Lewis is quaking in his Formula 1 boots 
[/quote]

No he's hopping mad that he had to use Bridgestone's for years and now he's stuck with Pirellis.

[remlapeel]

I personally find using sport traction mode seems to work well with the GTI. Have you guys tried it ?

[ffrank]

Update on my car, as mentioned above I could only recreate tramping in 1st gear (if at all), and never in 2nd gear.

I now have new tyres on the front, vredesteins, and increased bhp thanks to a dtuk box. On some testing today I was getting tramping in 1st gear if flooring it, but I could not replicate any tramping in second gear. This was on damp roads also.

I am thinking there must be another factor at play here. If Fred, you can replicate tramping reliably in 2nd gear, and I can't even with 240bhp going through the front tyres, something doesn't add up!

So, just a thought, but could the missing factor be wheel balance?

If you google causes for wheel tramping the most common reason is unbalanced wheels. Could the big variances we are all seeing in the behavior actually be as simple as some suspect quality control on wheel balancing at the VW factory? It could even be some bad batches of glue and a few weights dropping off on the journey over... who knows. Or, perhaps the Bridgestones have even more weight variance than some of the other brands, making them even more sensitive to being properly balanced. 

[fredgroves]

I personally find using sport traction mode seems to work well with the GTI. Have you guys tried it ?

Actually, yes, in my original posts on this thread, if you drop ESC into maximum off (quite what its called escapes me at the moment) it did seem to kill it.

[fredgroves]

Update on my car, as mentioned above I could only recreate tramping in 1st gear (if at all), and never in 2nd gear.

I now have new tyres on the front, vredesteins, and increased bhp thanks to a dtuk box. On some testing today I was getting tramping in 1st gear if flooring it, but I could not replicate any tramping in second gear. This was on damp roads also.

I am thinking there must be another factor at play here. If Fred, you can replicate tramping reliably in 2nd gear, and I can't even with 240bhp going through the front tyres, something doesn't add up!

The DTUK box might well (in fact almost certainly) have a different power curve though surely?

Maybe that's the answer, if I just add a huge pile of extra power, it all goes away.... I'm off to convince my fleet manager that its a safety measure

[GrahamFR]

I actually found I wheel spun less with my DTUK box than I did standard, always thought it was strange but then my Bcs was quieter with the box on too so they may be linked, possibly smoother but obviously larger climb on the dyno graph? I dont know as I didnt look too much into it.