I've lowered the psi to 20 psi in the front (label for the 600 says 25 psi in the front). Regarding alignment, it seems to track straight and true at lower speeds.
Please, if you are still running OE spec Kendas on your Spyder or Ryker, it is very likely that they pretty much
NEED the (higher) pressures as printed on their tire placards in order for them to remain safe!! :shocked:
While we know that the Spyder spec Kendas are made with lighter materials than most other similar sized car tires and they have lower load ratings than similar sized car tires, plus we know the OE spec Kenda tires made for the Spyders come to us via a manufacturing process with questionable quality control, the jury is still out on the Ryker spec Kendas wrt all that! This is probably simply because no-one has really done a heap of miles on them and there are few if any reports on how the Ryker spec Kendas really work under the various Rykers. So please, at least at this stage, don't go deviating too much from the manufacturer's pressure recommendations for the OE Spec Ryker tires, as they may very well
NEED those pressures to work safely!
Once we've seen the data & info from more Rykers with 5 figure milage under their OE Spec Kenda tires, it may be possible to develop some 'fine tuning' of the manufacturer's recommended tire pressures, but until people actually do the miles & provide the reports etc, it really isn't a safe thing to make cold starting pressure changes of much more than a couple of psi up or down! Anything more than that may be risking tire failure, especially if you are ryding at speed, spinning your tires much, or ryding on unsealed roads! :yikes:
But for now & until we've seen those reports on tire behaviour, wear, quality control, etc for the OE Spec Kendas that come fitted to Rykers, it's only when you are running a/market car tires with heavier load ratings that are made for much heavier vehicles being run on these significantly lighter vehicles like our Spyders and Rykers that you can safely vary your cold starting tire pressures! In the meantime, play it safe & stick reasonably close to the manufacturer's recommended cold start pressures - after all, it is the manufacturers 'educated best guess' as to which pressure will suit most of their 'target market ryders' in their marketing department driven forecast of expected ryding conditions & circumstances etc....

:thumbup: