Duo Glide Tyres and pressure

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OneHandDuo
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Duo Glide Tyres and pressure

#1

Post by OneHandDuo » Sun Mar 03, 2019 11:01 am

Dear all,
if you (like I🤔) do not understand what the information in the service manual on tires, tire size and pressures means in today's terms, see below the recommendations from Dunlop.

The manual says:

Tire Size

Solo
5.10x16 Front 20 Rear 24
5.00X16 12 16

Rider and one passenger
5.10x16 20 26
5.00x16 12 20

Rider and one sidecar passenger or 150lb load
5.10x16 22 26 Sidecar 20
5.00x16 14 20 14



Here is what Dunlop recommends today:[b/]

tire model Size and characteristics recommended pressure
Front:
D402F MT90B 16 72H 2.4 bar (34.8 psi)
Rear:
D402 MT90B 16 74H 2.7 bar (39 psi)

So you can prepare the motorcycling season.

Drive safely.



Don P
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Re: Duo Glide Tyres and pressure

#2

Post by Don P » Sun Mar 03, 2019 3:07 pm

Means everything for original tires and nothing for today's modern tire

RooDog
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Re: Duo Glide Tyres and pressure

#3

Post by RooDog » Sun Mar 03, 2019 3:22 pm

Don P wrote:
Sun Mar 03, 2019 3:07 pm
Means everything for original tires and nothing for today's modern tire
Huh?
The period factory service manuals have information for original equipment tires back in the day. The modern tire manufactures publish inflation recommendations for current production and applications. Like stop signs and speed limits they are only suggestions, one makes adjustments from there.....
....RooDog....

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Re: Duo Glide Tyres and pressure

#4

Post by Excalibur » Sun Mar 03, 2019 10:28 pm

Studying tire pressures when I bought my Metzelers, I found it hard to pin down a stated pressure. Instead they recommended looking at tire print to the ground.
See here

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Re: Duo Glide Tyres and pressure

#5

Post by RUBONE » Sun Mar 03, 2019 11:49 pm

Lots of factors at play. Weight of bike, weight of rider, etc. Modern tires are built completely differently than vintage and generally need more pressure to create the correct profile, but each application differs. A stock Pan in no way weighs what a modern Ultra does, etc. Be prepared to adjust and monitor wear to get the best load carrying and handling. Too low dramatically reduces the life of the tire. Too high will beat you up!

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Re: Duo Glide Tyres and pressure

#6

Post by Frankenstein » Tue Mar 05, 2019 2:06 pm

As all have said re: old tires vs new, agreed. At the shop we usually go with the 36 front, 40 rear for all modern HD's with 500x16 type tires front and rear. 30 front, 40 rear with 19's, 18's smaller section front as per sporty, FX series.
But for my own rigids, rear 15 to 20 max depending on load. Stays on the bead, gives me a little shock absorbing. :D
Usually 24-28 on the front for 3.00x21 or 3.50x19 sizes. Just starting points, just don't go too low on the rear, it just keeps feeling better 'till slipping pulls the stem out of the tube.
DD

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Re: Duo Glide Tyres and pressure

#7

Post by Panacea » Tue Mar 05, 2019 8:57 pm

I could never run more than 24lbs in any pan tire, But that's just me...

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Re: Duo Glide Tyres and pressure

#8

Post by RooDog » Tue Mar 05, 2019 10:06 pm

I run 40 PSI in my 19" front tire and I can tell when I push the bike around in the garage when it needs air.
...RooDog....

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