I have just installed Q5's on my 2020rtl. I know I saw a post somewhere that recommended 15-17 psi for front Q5. I am running 16 psi. I saw another post that talked about if the pressure between the right and left front tire was not equal it might cause handling issues. I have 16 in one tire and 16.5 in the other. Is that an issue or is that close enough.
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Q5 tire pressure question
- Thread starter Doc McCoy
- Start date
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
16 is fine .... if you ride aggressive ( I do in the " twistie's " ) go up to 17 .... 1/2 lb. difference, wouldn't bother me. ( and I'm a tire guy ) ... a lot of folks don't realize the gauge they are using probably isn't accurate anyway .... I'd bet serious money only 1 in a 100 could tell you if the front tires weren't EQUAL after riding that Spyder .... Mike :thumbup:
ButterSmooth
New member
I've looked for inflation charts for the 165/60R15 tires and can only find pressures down to 26 psi @ 68°f for loads much heavier than ours. With 1/2 tank of fuel and me on board there's 750# on the front axle, so 375# for each tire. That's less than half the 26psi recommended load. I assume the 16psi was arrived at empirically, since there seem to be no charts. The other missing piece of data is how the pressure changes with temperature, since this time of year 68° rarely happens in my shop. If I'm checking them at 84° like today, what adjustment do I make? I've been guessing 1# per 10°, but have measured much bigger swings in pressure than that -- for example 10# for 30°. I'm NOT trolling Mike and Peter, I'm truly perplexed by it all...
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
Tire pressure charts :roflblack::roflblack::roflblack: as far as Spyders are concerned Peter and I are the " charts " ...... :thumbup:
Mikey
Well-known member
Your way over thinking this!!
ButterSmooth
New member
So, when it's 90° during the pressure check, what pressure do you recommend? The 16psi (that you recommend :bowdown: and I use) would appear to be too low??? I don't think Ralph Nader is watching anymore...
Rarely if ever are my spyder's front tires showing the same PSI. IF they are the same it is because it's not being ridden and sitting in the garage. Even then there can be as much as a half-pound difference. On these small tires, ambient temperature influences will cause wide variations on tire PSI. That's because of their low volume. Pressures can very as much a 3 or 4 pounds or more over the course of a day's ride. If you can keep your two front tires at the same pressure all the time, you'd be better off visiting a casino because your luck is running at about 100%. Just do your best to get them as equal as you can and then enjoy the ride. You'll be fine.
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