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I have no problem I have an opinion that's what the board is for. I don't like the Sat Nav its crap... I know where I am going unless diverted onto an unknown road and that's when the Lexus Sat Nav is useless and mine is right up to date. On my Jag I have a Nav Man its twice as good as the Lexus. I think your suffering from cognitive dissonance !!

Hi Kelvin, Congratulations. In January I'm hoping to order a Premier with the no-cost 17" wheel option because I share your concerns about ride quality. I haven't been able to compare ride quality with different wheel sizes in the new IS but experiments with my 2009 IS showed some, but not a dramatic, difference. Another advantage of the 17" option is the improvement in fuel consumption, according to figures in the brochure. Also I guess the wheels and tyres should be less susceptible to damage from hitting pot holes and presumably the tyres should be cheaper to replace. Finally because the front and rear 17" tyre sizes are the same they could be rotated to balance wear. Sorry I'm beginning to sound like a salesman so maybe I should end with the contrary point that 255 wide, lower profile 18" tyres should improve road holding.

I thought it already did? In Nav screen select destination then top right it says 1/2 - move to page 2 and there is full post code entry...if my memory serves