Author Topic: Tonti Frame Style Tires: Formula Brand?  (Read 11469 times)

Offline Groover

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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #30 on: February 11, 2015, 01:17:27 PM »
For cast wheels you only ned to get tubeless threaded valve stems. If you order tires online from a place like Motorcycle Superstore they will also have the valve stems. So does you local NAPA or local MC shop. In certain instances you may have to drill out the hole for the new valve stem a bit.

Sounds easy enough. Thanks for the tip. Any reason I should not convert to tubeless? I was going to stick with tubes cause that seems to still be a good system in my book, but the more I read online, the more seems like tubeless may be better so if needed, I could potentially do an on the spot plug-repair of I got a flat (with a plug kit, and maybe a small Co2 bullet thing)?
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Offline Triple Jim

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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #31 on: February 11, 2015, 02:29:07 PM »
Groover, just for the record, Pirelli Sport Demons are bias ply tires.  If I had cast aluminum wheels, I'd get sealed valve stems and go tubeless, although I don't hate tubes.
« Last Edit: February 11, 2015, 02:30:16 PM by Triple Jim »
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Offline Groover

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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #32 on: February 11, 2015, 02:45:58 PM »
Groover, just for the record, Pirelli Sport Demons are bias ply tires.  If I had cast aluminum wheels, I'd get sealed valve stems and go tubeless, although I don't hate tubes.

Good deal, thanks again. I must have missed it somewhere that the Pirelli's were double-ply. Would this be an applicable stem? Any good ones you guys are aware of?

http://www.motorcycle-superstore.com/22509/i/drag-specialties-metal-valve-stem?WT.ac=SLIsearch
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Online Perazzimx14

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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #33 on: February 11, 2015, 03:34:18 PM »
Good deal, thanks again. I must have missed it somewhere that the Pirelli's were double-ply. Would this be an applicable stem? Any good ones you guys are aware of?

http://www.motorcycle-superstore.com/22509/i/drag-specialties-metal-valve-stem?WT.ac=SLIsearch

Your on the right track but you need to measure the wheel thickness where the stem will go though and allow another approximately 3/4 of an inch for the rubber, nut, washer and valve cap. Also measure the diameter of the hole and get something that fits without drilling the wheel.
« Last Edit: February 11, 2015, 04:41:24 PM by Perazzimx14 »
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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #33 on: February 11, 2015, 03:34:18 PM »

Offline Groover

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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #34 on: February 11, 2015, 03:50:10 PM »
Ok, thanks for the reply and tips. I think I'm now 99.9% convinced to make the switch to Tubeless!
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Offline charlie b

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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #35 on: February 11, 2015, 05:10:11 PM »
Do it, you'll like it!  :)

I converted mine a bit over a year ago.  I had to turn down the flange a little to fit in the recess but that was it (I would not do anything to the rim).  I also did not use the rubber 'gasket' under the nut.  I just used the one inside the wheel (between the flange and the rim).

Shinko SR740f is avaliable in 100/80-16.

Mine are 110/90-16.  I don't like to vary from that even though those will probably fit.
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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #36 on: February 11, 2015, 05:52:42 PM »

Mine are 110/90-16.  I don't like to vary from that even though those will probably fit.


Up or down one size is not uncommon. If you measured 5 different manufactures tires width I'd bet you would find 10mm of variation.
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Offline charlie b

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Re: Tonti Frame Style Tires: Formula Brand?
« Reply #37 on: February 12, 2015, 08:14:41 AM »
I would bet you are right.  When  my current Sport Demon wears out I might have to try one.
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Harper's Moto Guzzi
Harper's Moto Guzzi. Where we still answer the phone, use the highest quality parts, and also do Transmission, rear drive, and carb rebuilds fast. Call us at 816.697.3411 and get your problems resolved.
http://www.harpermoto.com
Advertise Here