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Tire contact with the road
Posted: Mon Jun 22, 2015 7:39 am
by wangsuda
The recommended tire pressure seemed a bit low to me, due to the amount of weight my PCX carries (me at 110 kg, my son at 35 kg, and 10 kg of gear). The contact patch ran all the way to the side grooves. I upped the pressure a bit and I think I have a good contact patch. Please, opinions and advice are welcome if I have it wrong!
Front tire:

- Front Tire.jpg (50.74 KiB) Viewed 2352 times
Rear tire:

- Back Tire.jpg (55.18 KiB) Viewed 2353 times
Re: Tire contact with the road
Posted: Mon Jun 22, 2015 8:10 am
by homie
I backed off the recommended pressure about 3 pounds with the larger Michelin's for comfort and grip. This photo was taken at a point I had just leaned into a turn and scraped the ground to see how much tire is never used and does not reflect what you are showing... straight and level on a chalky road?
I might have to try that to see where I'm at with rubber contact 3-4 pounds under.
Re: Tire contact with the road
Posted: Mon Jun 22, 2015 8:14 am
by wangsuda
Ya, I am straight and level and fully loaded. Actually, it's cement dust LOL And I have not backed off. It is upped a bit (41 lbs rear, 38 lbs front).
Re: Tire contact with the road
Posted: Mon Jun 22, 2015 9:35 am
by homie
41 rear 33 front is the recommended for mine. Currently lowered to 38 rear 29 front.
You want to match your surface contact to a tread pattern? With all the patterns available I had not heard of this as a consideration for tire wear control. When I was high and tight I benched mine for performance but then backed down the air pressure because I was not feeling safe in the turns given a little gravel or other seasonal debris one might encounter. Please don't join the survivors list with hard slippery tires
What is the blue object next to the band aid? Looks like a rain gauge

I LIKE your choice of PCX color! Gun metal looks good, we get none of that here in the US.
Re: Tire contact with the road
Posted: Mon Jun 22, 2015 4:21 pm
by wangsuda
homie wrote:What is the blue object next to the band aid?
It holds my road tax/registration paper. Must be visible. Same for cars too.
Re: Tire contact with the road
Posted: Mon Jun 22, 2015 5:48 pm
by you you
wangsuda wrote:homie wrote:What is the blue object next to the band aid?
It holds my road tax/registration paper. Must be visible. Same for cars too.
Yep cars need to be visible.
Re: Tire contact with the road
Posted: Mon Jun 22, 2015 9:09 pm
by homie
wangsuda wrote:homie wrote:What is the blue object next to the band aid?
It holds my road tax/registration paper. Must be visible. Same for cars too.
Absolutely no appreciation for design and symmetry when it comes to vehicles. You mean to say not only does a new rider have to display a billboard on his wheels front and back in addition you hang paperwork in a tube?
You know if ever government successfully pulled off something that ugly over here it would be tantamount to making firearms illegal to the general public. We simply would not comply. There wouldn't be enough prisons on the planet or liberal politicians left breathing to enforce such an overwhelming feeling of a government out of control. Much like our current administration which has paved the way for a massive up rise in more informed voters next year... AGAIN!
Re: Tire contact with the road
Posted: Mon Jun 22, 2015 9:54 pm
by wangsuda
homie wrote:wangsuda wrote:homie wrote:What is the blue object next to the band aid?
It holds my road tax/registration paper. Must be visible. Same for cars too.
Absolutely no appreciation for design and symmetry when it comes to vehicles. You mean to say not only does a new rider have to display a billboard on his wheels front and back in addition you hang paperwork in a tube?
Just a rear license plate . . . and there are alternatives to the tube. You can tape the piece of paper on to an outer panel of the PCX LOL
Re: Tire contact with the road
Posted: Mon Jun 22, 2015 10:48 pm
by homie
We have gangs that might object to disfiguring their motorcycles
Re: Tire contact with the road
Posted: Tue Jun 23, 2015 6:39 am
by fish
Your owner's manual will tell you the proper tire psi for normal and max loads.
You must be at max loads at that weight.
Honda engineers have worked all of this out for you.......they built your scooter.
Fish
Re: Tire contact with the road
Posted: Tue Jun 23, 2015 8:01 am
by Bash On!
Doing a happy dance here in Texas. New law does away with the ugly inspection sticker and combines it with the tag registration.
Motorcycle dealers here would be tricky. They did the initial inspection and used a big 'ol plastic tag frame with their advertising to also attach the inspection sticker to. New law = no more ugly plastic frames.
Re: Tire contact with the road
Posted: Tue Jun 23, 2015 2:38 pm
by homie
YAY TEXAS! best state in the union... if only it didn't get so hot, and the fence was a little higher
Re: Tire contact with the road
Posted: Fri Jun 26, 2015 9:38 am
by maddiedog
I use a lot more tire than that.
I should take a picture, my tires are scrubbed almost the whole way to the edge.
Re: Tire contact with the road
Posted: Fri Jun 26, 2015 10:33 am
by Bash On!
maddiedog wrote:I use a lot more tire than that.
I should take a picture, my tires are scrubbed almost the whole way to the edge.
Using sandpaper on your tires doesn't count.

Re: Tire contact with the road
Posted: Fri Jun 26, 2015 11:38 am
by homie
maddiedog wrote:I use a lot more tire than that.
I should take a picture, my tires are scrubbed almost the whole way to the edge.
You must have removed your center stand because that is the limiter

or the brand tire you have is different than Michelin.
Re: Tire contact with the road
Posted: Fri Jun 26, 2015 12:45 pm
by Alibally
The unworn edges are called chicken strips a believe.
Re: Tire contact with the road
Posted: Fri Jun 26, 2015 1:15 pm
by maddiedog
homie wrote:You must have removed your center stand because that is the limiter

or the brand tire you have is different than Michelin.
My centerstand is long gone. The 2011s had issues with the centerstand, so I took mine off. I have leaned enough that my body panels have touched down.
I have Dunlops in the rear, stock IRC up front.
Bash On! wrote:Using sandpaper on your tires doesn't count.


Re: Tire contact with the road
Posted: Fri Jun 26, 2015 5:56 pm
by you you
maddiedog wrote:
My centerstand is long gone. The 2011s had issues with the centerstand, so I took mine off. I have leaned enough that my body panels have touched down.
That must have hurt