Front tire for sidecar

elizilla

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I am wondering if a different front tire would be a better way to reduce the wobble tendency, than a steering damper would be. There are sidecar-specific tires which have a flatter profile. Note that when they call these "sidecar tires" they're not talking about just the tire on the sidecar, they mean for all three positions - they are tires meant for not leaning.

On the Ural forum they are saying that Heidenau has just announced that they're going to offer their K28 sidecar tire in a 19" size. Here is what they say on the Heidenau website:

K28 Motorcycle Sidecar Tire
Heidenau K28The K28 is our newly-developed sidecar tire. Drive and steering forces are distributed over a large area of contact thanks to the angular contour of the tire. This and the stable longitudinal profile in the center of the tire reduces wear and increases mileage. High wet-grip is achieved through the use of new additives to the mixture, and the special tread design.
Sizes:
4.00 – 18 M/C 70P TT
4.00 – 19 M/C 71P TT

The Urals have the same rims in all three positions and most Urals have 19" wheels. So that's pretty clearly who this is aimed at. But I wonder if it would also fit the Super10's front wheel? I don't know how to translate between the type of tire size that is described as 110/80-R19 and the old-fashioned type of tire whose sizes are described as 4.00 – 19 M/C 71P TT. How do these things compare to each other? Anyone here know? Can you actually translate between them?

My wrecked Ural got towed away yesterday or I'd take its spare over, set it next to the Super10's front wheel and eyeball it.
 

elizilla

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Further digging on the Heidenau site finds a page that translates this. Looks like it might work. I think the K28 will be lower profile, which might actually be good, since the rear car tire is also lower profile; it would bring the front down a bit to match. Still not sure if it is a good idea or not. "TT" means tube type and I don't know if that's OK or terrible.

I sent messages to ask Heidenau and to ask DMC, but I'm still interested in what anyone here might know as well.
 

elizilla

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I have used Avons in the past and liked them, but not for this obviously. :) We can definitely get them here. Their 19" sidecar tire is a 3.50. DMC says that they have used them on older bikes, but didn't say whether they think they'd be good on this one. They also have used a Metzler sidecar tire but that one only comes in 18".

I guess I can experiment. :)
 

elizilla

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Yes, it has a car tire on the rear and on the sidecar. I'm looking at this K28 for the front only.
 

2112

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elizilla said:
I guess I can experiment. :)
It may well have to be trial and error to find the right combo for your combo. Best of luck with it ::008::
 

GearheadGrrrl

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I've never tried the flat profile "sidecar" tires myself, but I've heard that on lighter bikes like the BMW airheads, Guzzis, etc. they can reduce the possibility of a tank slapper. But if you've got real bad handlebar shake, I suspect a steering damper will be needed.
 

jmoore

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Katherine , what brand and size of car tire did they install?
 
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