I checked Seat site and they are saying that the standard tyre size is 205/45 ZR16.. Not 195 width..
Anyway the "ZR" part of the insurance request is the key part.. It is the Speed rating of the tyre.. As with all car manufacturers they specify the Tyre size, Speed Rating and Load index figure for use with the car..
The insurance companies load all this info into their computer database and that becomes the standard factory spec..
So if you fit "V" rated tyres instead then you have an accident, the insurance assesor will turn up with the list of "standard" fit items..
He will look at the tyre size, the Speed rating, The condition of the tyre at the time of the accident, is it fitted correctly if it is directional, etc etc.. If it is not correct bang goes your insurance.. No payout because it is invalidated..
NOTE: the tyre manufacturer or tread pattern etc will not be a problem insurance wise as long as you fit a tyre of the same base specification.. Double checked with my wife who is an insurance broker..
On the MOT front, The car would pass the MOT as long as the tyres were
within the 1.6mm legal limit across the centre 3/4 of the tyre
Were the same size on each axle
Were fitted thecorrect way round
Were not damaged, ie bulges, cuts, etc
But importantly the MOT test does NOT look at the Speed rating or load index or whether the tyre is the correct size for the vehicle... They only have to meet the criteria noted above.
So in summary you could fit "N" rated tyres that have a Max speed rating of 81MPH!!! and it would pass the MOT..
http://www.tyresave.co.uk/tyrspeed.htmlhttp://www.tyresave.co.uk/tyrspeed.html for speed rating info
http://www.bridgestone.com.au/tyres/products/car/care/markings.asphttp://www.bridgestone.com.au/tyres/products/car/care/markings.asp For further detail..