[The_Rigger]

Still tweaking the Special...  I know people have said to drop pressures down to 18-22 lbs/ for a C5 with 18" front wheel, but what's the urban wisdom vis-a-vis a 19-incher?

Mine was filled by the dealer to 36(!!!)psi. I have it down to 24 now; gonna see how I like it. Just wondering what others have found to be appropriate.

[Arizoni]

I was using 18-19 psi in the front tire on my G5 but just out of curiosity I increased it to 24 psi about 400 miles ago.

I haven't noticed a change in stability up to 75 mph and my fuel mileage has increased from an average of 71 mpg to 76 mpg.

[Hobbydad]

I also run 24 in my C5's front, and it's solid at least to 80. I tried the recommended 18 and it felt like I had a flat.

[GSS]

I am running 24 psi on my front 3.5x19 Dunlop K70. Absolutely rock stable C5. 4.0x18 rear is 28 psi.

[ace.cafe]

With the Iron Barrel bikes that run AM26, like the Fireball, we run 28 front and 30 or 32 rear.
Works fine up to about 105mph, which is as fast as we've been able to do so far.

[Hobbydad]

I originally thought the recommended lower pressures where for the Speedmaster tires, the majority of the posts I read never really said. I think the Roadrider tires (AM26) are good at the higher pressures.

[2bikebill]

I still run my G5 with 28 rear & 18 front - that's with AM 26 RoadRiders - and I like it fine. I tried more in the front but it just felt twitchy. It sounds all wrong - my other bike has 32 rear & 28 front - but both bikes handle beautifully with their recommended pressures.
I'm not heavy - 160 pounds wet through, so perhaps that makes a difference.
Those RoadRiders wear down fast though - one front outlasts three rears! BT45s next time...

[The_Rigger]

Well...  That was interesting.  Went to adjust the rear on my Special down to 24psi, and found that the dealer had installed the AM26 tire on backwards.  There are *two* arrows denoting direction of rotation, and they had followed the arrow for the front tire instead of for the rear.  Who'da thunk it?

Nonplussed,
Me

[Arizoni]

Shouldn't be a big problem unless you ride in the rain.
The backwards rotation will tend to pump water down under the tire rather than splashing it forward out of the tires path.

[The_Rigger]

Yeah, I know...  But the weird bit is that the front RoadRider has the directional arrow set to turn the tread one way, with the sipes pushing water out from under the contact patch, and yet the rear tire has *two different* arrows, depending on whether it's mounted as a front tire or a rear tire, and the rear tire is the opposite of the front-only tire, with the sipes running the other direction.

Never seen anything like that before, and the dealer apparently hasn't either, cuz they put the rear tire on oriented like a front tire.  Not sure why Avon chose to do that; I've run their Venoms on my '92 Aspencade for years and they aren't like that.

Is a puzzlement...

[Arizoni]

I'm probably wrong but I think the arrow direction serves two purposes.
The tread pattern pumping water as mentioned and the way the ply's in the carcass  are laid up.

Some tires are meant to take their greatest loads in one direction.
A front tire for instance is meant to do the braking.  A rear tire is meant to do the pushing.
As these are in opposite directions if you have a tire that is designed as a front tire with its arrow showing the proper rotation for a front tire and it is installed on the rear, a knowledgeable tire guy will install the tire opposite the direction of the arrow so the tire will do the pushing without rapidly wearing out.

[gremlin]

I hope your dealer has *ASKED* you to let them correct the error, at no charge to you.

Yeah, I know...  But the weird bit is that the front RoadRider has the directional arrow set to turn the tread one way, with the sipes pushing water out from under the contact patch, and yet the rear tire has *two different* arrows, depending on whether it's mounted as a front tire or a rear tire, and the rear tire is the opposite of the front-only tire, with the sipes running the other direction.

Never seen anything like that before, and the dealer apparently hasn't either, cuz they put the rear tire on oriented like a front tire.  Not sure why Avon chose to do that; I've run their Venoms on my '92 Aspencade for years and they aren't like that.

Is a puzzlement...