When riding two wheels I always preferred to inflate my tires a bit on the high side, and now on the Spyder I do the same. Plus I want to keep the number of times that I have to add air to the rear tire down to as few as I can. I bought a TPMS system, and inflated the rear to 30, not the recommended 28, and the fronts to 22, not the recommended 20. These are cold temps so obviously the pressure will go higher after riding a bit. Is this too much to be safe?
-
There were many reasons for the change of the site software, the biggest was security. The age of the old software also meant no server updates for certain programs. There are many benefits to the new software, one of the biggest is the mobile functionality. Ill fix up some stuff in the coming days, we'll also try to get some of the old addons back or the data imported back into the site like the garage. To create a thread or to reply with a post is basically the same as it was in the prior software. The default style of the site is light colored, but i temporarily added a darker colored style, to change you can find a link at the bottom of the site.
Too much air pressure?
- Thread starter vito1943
- Start date
The more over your tire's optimum pressure that you run them at, the less they'll be likely to increase in temp/pressure as you ryde; but they'll also have less real traction, be more susceptible to punctures from road hazards/debris etc, wear quicker, and give you a harsher ryde. :lecturef_smilie:
That said, unlike the higher load & speed rated Passenger Car tires that many run safely & successfully at lower pressures, the lightly constructed OE Spec Kendas really NEED the BRP/Kenda recommended pressures to function at all reasonably &/or safely, so running them at 22/30 psi instead of the recommended 20/28 psi is really only over-inflating them juuust a little, so none of those things are probably going to be too much worse than they are anyway - except maybe for the rapid wear rate, especially in the centre of the rear tire's tread!
Good Luck! :cheers:
That said, unlike the higher load & speed rated Passenger Car tires that many run safely & successfully at lower pressures, the lightly constructed OE Spec Kendas really NEED the BRP/Kenda recommended pressures to function at all reasonably &/or safely, so running them at 22/30 psi instead of the recommended 20/28 psi is really only over-inflating them juuust a little, so none of those things are probably going to be too much worse than they are anyway - except maybe for the rapid wear rate, especially in the centre of the rear tire's tread!
Good Luck! :cheers:
Last edited:
BajaRon
Well-known member
Over inflation on the front tires with the stock Kenda's can make steering twitchy. The Kenda's tend to roll under on hard cornering (Fronts). Over inflation will reduce that effect somewhat. Of course that ride will be harsher, as already mentioned. At recommended pressures, the rear tire has about a 2.5-3" contact patch with the roadway at speed. Additional inflation will reduce this contact patch size. And, as mentioned, will increase the rate of wear, which is already quite poor. Many reduce the air pressure in the rear tire in an attempt to increase the contact patch and mileage.
As always, everything is a trade-off.
As always, everything is a trade-off.
BajaRon
Well-known member
It may be a case of you don't know what you don't know. If you're curious. Drop the fronts to 18 psi and the rear to 26 psi. It isn't going to hurt anything or be dangerous. But it should be enough of a pressure change to make a noticeable difference. Then you will have something to compare to.
opcorn:
BajaRon
Well-known member
That following rider is correct. The fronts are worse than the rear. More pressure improves this. But I am not sure it makes that much differents at any reasonable pressure. I think the loss in tread compliance (thus traction) may negate much of the handling improvement achieved with increased PSI for tire roll reduction.
The reports I am getting from the new Kanines compared to the OEM Kendas are that tire roll is much improved. I will be trying them myself once I can get my hands on a set long enough to put them on my Spyder. There is no doubt that the Kanines are much improved over the OEM Kendas. But frankly, a well made rubber band would probably work better. In other words, a very low hurdle.
The questions now left to answer address how the new Kanines compare to car tires. Just based on the difference in purpose and format, I think we can expect better traction, similar handling characterizes, shorter life span (again, how much to be determined) and probably softer ride.
The job of the curious is never done!
Last edited:
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
That's because the " casing " is weakly made compared to Auto tires .... I have ( accidently ) let my rear Michelin tire get down to 8 lbs. PSI, yes it was a bit squirrely but really not to bad ... and at the Drags in Missouri I had the rear at 12 lbs. ....... I wouldn't dream of doing that with a Crapenda :gaah:..... Mike :thumbup:
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
The Altimax RT43 is available in 215/60-15 ..... and this will make your speedometer read almpost perfect ... compared to the OEM 225/50-15 .... 100's ( maybe 1000's ) of folks here use that size ..... Mike :thumbup:
When I convince myself to crawl back under the Spyder to get to the rear tire I might let out some air and try lower pressures, but for now I think I will stay off the ground. With my prosthetic knees I cannot kneel on the ground, and with my damaged shoulders I am limited as well. Riding is no problem, getting to the tire valve in the rear is a real PITA for me.
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
Neither Peter nor I recommend or even suggest anyone ride on " Under-inflated tires ", that's dangerous. .... What we advise to all is to use a PSI commensurate with the WEIGHT of the LOAD. .... when folks started using Auto tires on Spyders, we figured out what PSI should be used on a much more robustly constructed tire compared to a Crapenda !!! .... the PSI numbers were arrived at buy using Tire Science, as opposed to Butt Feelings ...... Mike :thumbup:
BryanSD
New member
For what it's worth, the service department at my dealer brought up that the Kenda's seems to wear a lot quicker when overinflated (30 lbs vs 28 lbs likely isn't his definition of over-inflation). Anyway he encouraged me to stick at 28 lbs or go just a little under...but never overinflate. On a side note, I put on the Kenda Kanine KR20 tires and I'm much happier with them than I was with the original Kenda tires. I was in a freaking rainstorm in the Black Hills at 55 MPH, handled the curves well, and never hydro-plane. Some other Spyder riders weren't so lucky.
T.P.
Member
On the tire loading sticker in the frunk on my 2017 F3T it says for the oem Kenda tire, 15+2 psi for the fronts and 28+2 psi for the rear.
On the tire loading sticker in the frunk of MRS.T.P's 2020 F3L it says for the oem Kenda tire 15psi for the fronts and 28psi for the rear.
Where are people getting the 20-22 psi recommendation for the front Kenda's ?
I'm close to two years running the Quatrac 5's on mine and MRS.T.P. has just been switched to the new Quatrac tires.
T.P.
On the tire loading sticker in the frunk of MRS.T.P's 2020 F3L it says for the oem Kenda tire 15psi for the fronts and 28psi for the rear.
Where are people getting the 20-22 psi recommendation for the front Kenda's ?
I'm close to two years running the Quatrac 5's on mine and MRS.T.P. has just been switched to the new Quatrac tires.
T.P.
Peteoz
Well-known member
Similar threads
