I run the Vred 205/60 set at 15 PSI with 13 oz Ride-on on the back and Vred 175/55 set at 17 PSI with 8 oz Ride-on in each on the front. I used a Jaco digital inflator to air the tires and the same to check the pressures at the end. I weigh 145# and was carrying minimal cargo. This latest trip was 230 miles and the last leg was 60 miles after a brief fuel and pee break. When I checked the pressure first thing, I only got a 1.5 PSI increase on the front and a 2 PSI increase on the rear. The fronts are basically new and the rear is at .25 tread remaining. Do I dare reduce the pressure on these tires or is using Ride-on making the 4 PSI rule no longer valid? I have absolutely no issues with handling. Could it also be a validation on how well these tires are constructed?
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Question about the 4 PSI rule for tire inflation
- Thread starter jjc54
- Start date
Snoking1127
Well-known member
I run 16 in my Vredestein fronts and 18-19 in my General out back. I ride both single and two up. I do not bother balancing the tires. This is a picture of the weights I just took on this low mile Kenda rear on the new to me 2018 RTL.
^^ See above!
I haven't actually tested the tire temps either, but I'd think that by adding Ride-on to the mix, you've probably at least markedly skewed 'the 4psi rule of thumb'!
Do you think you really need the Ride-on??
I haven't actually tested the tire temps either, but I'd think that by adding Ride-on to the mix, you've probably at least markedly skewed 'the 4psi rule of thumb'!
Do you think you really need the Ride-on??
BajaRon
Well-known member
I can't speak for the OP, but if you're asking me, Peter, I'd say there are definite advantages (and 1 potential disadvante) to using Ride-On. I push hard for people to use the Automotive Ride-On even though Ride-On recommends the motorcycle version for the Spyder. Which makes absolutely no sense at all.^^ See above!
I haven't actually tested the tire temps either, but I'd think that by adding Ride-on to the mix, you've probably at least markedly skewed 'the 4psi rule of thumb'!
Do you think you really need the Ride-on??
EdMat
Well-known member
You have to remember it's a rule of thumb. Even if you disregard the Ride-on, you are lightly loaded and you don't mention the riding conditions. If you were riding hard in twisty conditions it would raise the pressure more than a leisurely cruise down some back roads. Based on my experience with the same tires you are too low in PSI already.
I use it because I don't like the spare tire that comes with the bike (Ha)! I think it does a decent job of balancing and the people that replace my tire can't balance it. I need the rear changed soon and can't wait to see his mood when i go pick it up. I understand that it is very water soluble. If I remember right, I got introduced to Ride-on from this site!^^ See above!
I haven't actually tested the tire temps either, but I'd think that by adding Ride-on to the mix, you've probably at least markedly skewed 'the 4psi rule of thumb'!
Do you think you really need the Ride-on??
BajaRon
Well-known member
Ride-On is supposed to extend the life of the tire. It will be interesting to see if that pans out for you.
Snoking1127
Well-known member
Not a good idea to run tires under inflated. Creates more heat and tires hate heat. Also there is a sweet spot in inflation regarding handling, and 14.5 might be below that point. When you install the new tire and have a few miles on it, place a piece of white paper on a smooth surface and drive across and then look at the pattern the tire left on the paper.
BajaRon
Well-known member
I have to agree. There is more to life than how long a tire lasts. Like being alive to appreciate it. Going too low can create surprises that you may not like.
We have had a customer come in with 7 lbs. in the rear tire. And another come in with 51 lbs. in his rear tire. That's the spectrium we've seen so far.
CloverHillCrawler
Well-known member
I found 15 to be the sweet spot on my rear quatrac. At 16 PSI I was starting to get a wear strip down the middle of the tire at 20K miles. Bringing the pressure down to 15 seems to have stopped that for now. I went on ahead and lowered my fronts to 15 as well. But 14.5 should not be under inflated. I also remember a thread on here where Mike said that either him or one of his buddies was running 11 psi at the drag strip with the rear tire.
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