47jag said:
June,
I see in a previous post that you have been accused of being a Jaguar employee which you have denied, fair enough, but you certainly come across as a Jaguar apologist. You do seem to be reluctant to accept that Jaguars can have problems as in this case due to a crappy tyre fitment. I personally think they should be recalled as unsuitable for the UK market. "They are not recommended for use below 7 degrees C". That would be about six months up here in Scotland (9 months if you base it on last year).
The drive train video was interesting, being able to do all those adjustments at lightning speed. However my/our complaint is it can't correct a problem at walking pace because of the luck of the draw with what tyres are fitted to our cars. I noticed that the tyres that Andy was extolling the virtues of were Continentals, he cant be accused of telling 'porkies' as it seems that no one has experienced 'our problem on a car so equipped.
The attached video casts doubt about the claims you posted regarding Winter tyres.
While it cannot be argued the will give better braking and steering in snow I have found that ice is the 'great equalizer' when it comes to winter driving. IMHO unless the tyre is studded it will be just as useless as a summer tyre on ice. I base this on my driving experiences during 13 Canadian winters. According to the attached video the performance on wet and dry roads can actually be inferior to summer tyres and that the best of both worlds is (for us in the UK) is to use an All Season tyre or the new Michelin Summer Bias All Season. I can relate to that as on my previous XF i fitted Nokian All Season tyres and used them all year. I thought that were great no matter what the weather.
Art
Art,
I can assure you with my engineering knowledge JLR probably couldn't afford to employ me, plus I wouldn't ever want to work for such a shoddy outfit. I have already rejected two Landrover Discovery Sports in two years before venturing to Jaguar. I'd like to think this car will last a bit longer, we will see.
My background was initially in aircraft engineering, motor Engineering then electronics and finally IT, but I'm now happily retired and still young enough to enjoy life.
I was by the way born and brought up in Aberdeen and have spent some of my younger years driving in Norway.
90% of cars sold nowadays come with summer tyres, yes you'd expect an SUV to possibly have a choice of tyre, but I don't think it's a big deal that it doesn't. Perhaps also because I checked which tyres it would be delivered with.
The best tyres for summer are a summer biased tyre , the best tyres for cold /winter driving below 7degrees are winter tyres. All seasons traditionally are a middle ground tyre, the exception being the new summer biased cross climate from Michelin and its new summer biased Continental cross equivalent; neither of which are making sizes to fit the FPace 19" and above , I have written to them both about future tyres and got a "we cannot advise on our future products or tyres at this moment " answer.
The tyres capabilities are not related to the manufacturer but to the compound of which the tyre is made, this directly relates to the amount of grip the tyre can provide at various temperatures. A good example is the Pirrelli P Zero , it is A rated for wet, however that is wet and above 7 degrees. It would be far less efficient at stopping in the wet below 7 degrees, because it's construction properties mean that it becomes harder and inflexible. This is the same inflexibility which causes the tyre to skip and jump at lower temperatures.
The Pirelli skips more than the Continental? Yes probably does, the Pirelli tyre traditionally also lasts longer than the Continental in mileage...because it's a harder compound, plus you'd have to take into consideration the tyre size too.
Ice is another condition to take into account, there are winter tyres that cope better than others on ice without studs. But some conditions do dictate studs , unfortunately in the UK even up north you'd be changing your tyres far too often if you went down that route due to current regulations for studded use.
The video illustrates the diffferences in the tyres, you would thus have to select the correct tyres for your own circumstances, there is not a one size fits all for the UK, each individuals driving requirements make a difference.
Maybe I just fail to see why after spending a large sum on a (sports) suv some folks quibble about the most important safety item on the car; the tyres. It's not as if you loose money swapping your summer tyres off in the winter, it extends the life of both sets, 6 months each set a year.
June 16
Ps
I also put Nitrogen in my tyres
https://www.popularmechanics.com/cars/how-to/a3894/4302788/
. . jus' kiddin' . . 
