Urq tires

[ccohen5]

Your choice of a larger diameter for the track will reduce you acceleration
considerably and make turbo lag even more of a problem.  Given the
relatively high gearing of the Urq, surely this is noticeable.  I have just
gone the other way: 245x50x15 for the road and 225x40x16 on the track.  This
changes wheel revs per mile from 830 to 900.  The difference is noticeable
as I get on boost at lower speeds than before.

Colin