Yet another surprise- the old tires on the lakester are NOT Goodyear 'Landspeed' (D2956), they are 'Dragway' (D1966)! I had given the prior owner the benefit-of-the-doubt and assumed he ran the landspeed version. But since he had a one-way run of 263 mph at Bonneville, the Dragway version is apparently satisfactory. So... I guess I just need to buy four new D1966's at only about $200 each.