Hi. You should still be able to light up the tyres with trac off and in sport mode. The vibration could well be the tyres and getting them rebalanced could sort the problem out. 
Thank you. Which spline is correct? It looks like a normal torx head?yes you can remove it, there are no 19 inch replacements, only 18 and 20. You need the correct spline, not torx bit to remove the Ti bolts and valve.
It's practically removed itself, I don't think even the best panel beaters would be able to repair this. I have to upload a picture.probably best getting it repaired if possible.
I think they are stuck on and not easy to remove.
SB Wheels - Jaguar Original Equipment Alloy WheelsThank you for you help. Very much appreciated. Where did you order your valve o-rings from?
As for BBS, their website is still tuning and they still provide rims for the F1 teams?
- Richard