SonexBuilders.net

The original clearance of standard Sonex tire to wheel pant may not be relevant. Those small tires needed a very high pressure, about 25 PSI is max needed for the 5.00 x 5 s (Note: the rims specify 35 PSI Max. and the larger tires will provide more spreading force than the smaller ones.) The lower pressure lets the larger tires flex more. When first flying with mine, had the pressure around 20 PSI and tight clearances. One day a rather hard bounce flexed the tire enough that it caught one side of the wheel pant and and rolled in a portion of the pant requiring a repair job. Now have enough clearance so that flexing of the tire cannot snag the edge of the wheel pant.

David A.