Originally Posted by mcw999
Messing with tire pressure is a bad idea. Try replacement springs and shocks instead. Keep tire pressure to specs.
Please explain how this is a bad idea.
I would make the argument that it is a better, faster, cheaper, and perhaps smarter idea to establish your preferred tire pressures than it is to change springs or shocks. It is very interesting to me how every piece of our bikes are considered fair territory to most tinkerers for performance changes, but tires seem off limits. Tires changes can offer THE single most dramatic performance change on your bike, if done properly. The pressure recommendations from HD and the tire manufacturers are set to be safe for the vast majority of riding conditions, including a fully loaded down bike. No way in hell the same psi for a fully loaded bike is optimal for a lightweight guy on a chopped up bobber, but most riders seem to think the number on the sidewall is the way to go without even considering why.
If you've ever raced anything with big tires, you'd know this. But for car pressures, we usually wind up going higher than the rec - even 50+ psi on tires with 30psi recs, but cars are not motorcycles. Motorcycles need LOWER pressures to perform properly, but very few of recreational users know this.
I was having a lot of trouble with my Sporty and I talked to a professional motorycle racer friend of mine, he laughed at me, told me to drop them down to 25, and go from there. Incredible performance gain! Same thing when I got my vrod, much better performance at lower pressures.
Now - given that it takes only a moment to alter your tire pressures, and great perf changes are possible, how much sense does it make to do something so complicated and difficult to change as shocks and springs without even attempting to see what different tire pressures can do for you?
Just makes no sense to me. Something so easy to do, but we'd rather buy expensive springs and shocks and mess with an ounce or two of shock oil. I really suspect that most shock and spring changes stay put just because it's so complicated and costly to reverse, and you don't have to think about it - there they are - advertised, with instructions, if someone said it's so, it must be.
Lower your tire pressures. You can always change it back, but you won't want to. You can even do this with your child's bicycle pump, don't even need a quarter for the gas station pump.
One final thought - think about this - your tire pressures are always changing, as much as 10 pounds per sq inch even during a single riding session. Plus, they're always leaking air. How many of us check our tires to find they're "5 pounds down" or more - was it unsafe? You didn't even notice, but you probably thought you were just becoming a better rider.