Heidenau Tires

jseng1 said:
From my experience 110/90 19 is a better fit on the rear and 100/90 19 on the front. Both with stock WM2 rims
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Personally I like the 90/90 for how it turns in and think it is plenty for a street tire. On the other hand I had always ridden 750s until this year so maybe I would like the larger tires better on the slightly differentsteering geometry on the 850.
 
Matchless said:
If you are happy to run a front fitment on the rear, then Dunlop, Metzler, Kenda, Maxis, Michelin, & Bridgestone all make 110 90 19 tyres.
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Modern lay up should make this the norm these days. Many car tyres fit front and rear provided they fitted with the arrow facing the correct way.
 
1973x75 said:
Should they be mounted the same direction as the front, or reversed, like a Road Rider universal?
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Why? they don't do this with car tyres. They have a direction arrow, just fit it with the arrow in the correct direction. The Roadrider has front and rear direction arrow as they were manufactured using a different method and / or the tread pattern dictated fitment.
We also have the signed declaration from Heidenau that the K65 we sell is universal, it is not from a dealer or distributor, but the factory itself. Anyone wanting to see it then feel free to contact me on the technical email.
Unless the regulations have changed, here in europe ply tyres should fit 2 sizes either side form the design rim width, a radial motorcycle tyre 1 size from the design rim width. This is why Avon recommended the Roadrider as an alternative fitment for the Commando.
 
Stephen Hill said:
Fortnine and Revco, two Canadian suppliers, show a front K65 and a rear K65 tire, with separate stock numbers.
Leading me to think they are not a universal tire.
Check out the Revco link: https://fortnine.ca/en/catalogsearch/result/?q=Heidinaus tire
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That information would seem incorrect.

Haven't you yet opened and read the factory Heidenau spec sheet attachment for 100-90H19 K65?
(Previously posted above by nortonmargie)

"This tyre is applicable for front and rear use"
 
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nortonmargie said:
My understanding is there are three types of MC tires (or tyres) - front, rear and universals. From the attached PDF from the factory, the K65's are universals. I believe they should be reversed for rear wheel installation
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Thank you for that link , as it was not easy to find out the specs of the K65 , I could be tempted by the 110/90-19 , but according to your link the 100/90 is allready at 111mm max width ....!
 
concours said:
Loving the K65 on the rear
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What is the mounted tire width and height. How much weight to balance it and how was the run out of the K65. Tires are getting very costly and race tires can very pricey. Now a days my low amount of seat time means tires will die from old age and not wear. I have good luck with the Avon Road Runners on my Mk3, I mounted about 4 years ago. With lots of new tweets I took the head shake out of her and it feels very nice and stable , Finally.
 
Madnorton said:
Why? they don't do this with car tyres. They have a direction arrow, just fit it with the arrow in the correct direction. The Roadrider has front and rear direction arrow as they were manufactured using a different method and / or the tread pattern dictated fitment.
We also have the signed declaration from Heidenau that the K65 we sell is universal, it is not from a dealer or distributor, but the factory itself. Anyone wanting to see it then feel free to contact me on the technical email.
Unless the regulations have changed, here in europe ply tyres should fit 2 sizes either side form the design rim width, a radial motorcycle tyre 1 size from the design rim width. This is why Avon recommended the Roadrider as an alternative fitment for the Commando.
Click to expand...
In their signed declaration, do Heidenau state that their universal tires should not be mounted reversed for the rear?
 
Skoti said:
That information would seem incorrect.

Haven't you yet opened and read the factory Heidenau spec sheet attachment for 100-90H19 K65?
(Previously posted above by nortonmargie)

"This tyre is applicable for front and rear use"
Click to expand...
Yes, I read the attachment. I concluded the spec sheet was talking about the tread pattern, as per the column heading.
If it doesn't matter if the tire was used for front or rear, why would the retailers differentiate and use different part numbers?
Further clarification needed.
 
Stephen Hill said:
Yes, I read the attachment. I concluded the spec sheet was talking about the tread pattern, as per the column heading.
If it doesn't matter if the tire was used for front or rear, why would the retailers differentiate and use different part numbers?
Further clarification needed.
Click to expand...
Call the retailer and ask. Please update us with any informaiton
 
Am I missing something here, the idea of reversing a tyre for the rear is based on the lay up construction used. The Heidenau tyre has one fitting direction arrow, just one and thus the tyre must be fitted according to that arrow irrespective of being on the front or rear. Maybe this will explain it, many cars use tyres with just one direction arrow these days, they can be mounted front and rear and on vehicles with rear wheel or front wheel drive, but in all cases they must be fitted in the direction of the arrow. In the past you may have seen tyres with front and rear direction arrows, they are still about and again the arrows must be followed. Many new tyres only have one arrow, in fact some of the even newer construction methods don't even have an arrow and can be fitted any way you like as it makes no difference.
The Heidenau is for front and rear fitment, but you must follow the arrow. The widely available public spec sheet which is far from ideal covers two 'K65' one with rib and one without which is confusing.
The tyres we purchased came after much discussion with the factory, the tyres were supplied direct from the factory, and the signed technical detail is from the factory. Being German and in Europe I doubt that they would supply them due to the standards and the regulations imposed upon them if they were not suitable for purpose.
 
Stephen Hill said:
Fortnine and Revco, two Canadian suppliers, show a front K65 and a rear K65 tire, with separate stock numbers.
Leading me to think they are not a universal tire.
Check out the Revco link: https://fortnine.ca/en/catalogsearch/result/?q=Heidinaus tire
Click to expand...
Maybe you should discuss with those retailers why they chose not to be specific about this?

Margie has already kindly posted the tech sheet FROM THE MANUFACTURER which explicitly / specifically states front and rear use.

I can’t understand why you’d want to prioritise a retailers lack of information over a manufacturers explicit / specific information ?
 

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