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Radial Tire Thread

Discussion in 'V7/V85/V9 Chat & Tech' started by Bncprf, Mar 26, 2017.

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  1. Garth Weston

    Garth Weston Just got it firing!

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    Can anyone tell me the actual installed width of the Conti RA3 110/80 18? I installed Conti Classic Attacks on my BSA and the actual front tire width was only 93mm (after 6000 km) and not 101 to 108mm (100/90/19 front) as stated in Conti tech manual. Not complaining as they work great, but would like to confirm the size before I install the RA3s on my v7iii Stone.
     
  2. Neville

    Neville Just got it firing!

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    They seem true to size, measured mine at 109mm.
     
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  3. Garth Weston

    Garth Weston Just got it firing!

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    Thanks for the quick reply. I'll be installing the Contis this winter.
     
  4. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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    Don't have the bike in the garage to measure for you, but both front and rear tires fit thru the stock shocks & forks with much to spare...
     
  5. SaulGuzzi

    SaulGuzzi Tuned and Synch'ed

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    which tube size did you go with? Could you recommend me a link?
     
  6. V7RacerNZ

    V7RacerNZ Just got it firing!

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    Has anyone tried an 18" rear rim on their V7. I talked briefly to a guy at the Australian MotoGP who had laced up an 18" rear rim and he said it really helped the handling and he liked the higher gearing. I didn't ask what width tire he was running and now I'm wondering if it has the same effect as dropping the front. I'll upload a picture I took. I've also found an Outex tubeless kit on Ebay that would allow running tubless tires without tubes on spoked wheels saving unsprung weight. V7 Racer 18" Rear Rim.jpg
     
  7. Godfrey

    Godfrey High Miler GT Famiglia

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    The effect is the same as dropping the head clamps on the fork stanchions, up to a point. Of course, you eventually run into tire clearance issues, depending on the size of the tire being used, and it is jacking you up a bit which changes the dynamics of handling the bike through corner transitions. Plus you've got more unsprung weight and rotating mass to manage. It can be good, it can also degrade things ... It's the sort of small change that done within reason you might find nice but you might not, too.

    When the suspension was done on my Racer at GT, we dropped the clamps 10mm to good effect: the front end feels easier to turn without instabilities. I think I could drop it another 5-10mm to quicken the steering even further with the Conti RA3 tires before I start to hit the point of feeling too quick, but I kinda like a slightly lazy feel. And, with the Conti RA3s fitted, the gearing seems just about perfect to me. So upping the rear tire diameter is not a change that I'd be all that interested in trying.

    But ... as they say, "Your Mileage May Vary"! :D

    G
     
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  8. SaulGuzzi

    SaulGuzzi Tuned and Synch'ed

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    My conti ra3 didnt come with a balance mark, did anyone elses come without a balance mark?
     
  9. sib

    sib Cruisin' Guzzisti

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    No balance marks on mine, either.
     
  10. GT-Rx®

    GT-Rx® Administrator Staff Member

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    Some of the Euro tire companies have the pride/arrogance that their tires are perfectly balanced (always mark the rim’s heavy spot). Always a 50/50 shot in the dark. I have had some luck of using the visible seam (if seen) or the bar code labels if embedded on the inside of the tire as the mark.
     
  11. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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    Negative with balance mark on my tires also
     
  12. SaulGuzzi

    SaulGuzzi Tuned and Synch'ed

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    I just finished installing my tires last night.
    Putting tires on by hand in front of a gas station is a major pain in the ass.
     
  13. grame

    grame Tuned and Synch'ed

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    Need new tyres for Stone iii and just checking on the options:
    Bridgestone B45
    Conti RA3 (radials)
    Pirelli MT-60's (front radial and rear cross ply)
    Stock Demon Pirelli

    Is there any consensus on what's best? Mostly to be used for urban runabout/commuter/
     
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  14. vagrant

    vagrant High Miler GT Contributor

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    There is Pilots and shinko's but if u have mountains the contis are the best.
     
  15. Godfrey

    Godfrey High Miler GT Famiglia

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    I'm completely delighted with the set of Conti RA3 tires on mounted on Kinesis Tubeless spoked rims that Todd and I set up last Spring. I went for the 80 aspect ratio series front tire alternative ... wider tread and a higher performance rating than the OEM fitted 90 aspect ratio series tires.

    The stock Pirelli Demons are pretty crappy in my opinion. No experience with any other tires.
     
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  16. Poppe

    Poppe Cruisin' Guzzisti GT Contributor

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    Can't tell you about anything but Conti vs Stock. It's night and day. My RA3's are brilliant and actually some times give me too much confidence on my bike where as my Pirelli's always felt vague and loose. The biggest thing for me as a runabout/commutter was on the freeway where there would be bumps and dips and lines about, this would cause a "squirrelly" feeling on my bike where it almost felt like it was dancing back and forth. With the RA3's it really subdued all that. They are a blast to run on this bike and confidence inspiring.
     
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  17. grame

    grame Tuned and Synch'ed

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    My dealer recommended sticking with the stock OEM Pirellis on account of the system needing to be reset by riding for a mile at the same speed - not easy in the centre of London...
     
  18. GT-Rx®

    GT-Rx® Administrator Staff Member

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    I stand corrected. On V7’s with TC, see below/attached. I’ve never had to do this with any tire replacement of similar sizes. Only when tire pressures are low, which is a good indicator, does the TC step in early. All said, I personally ride with it off always.

    F1C5D4B3-DBB6-4169-B684-B81908DC40E8.jpeg
    3F6DBEF1-8C60-48BC-A849-051933689FDC.jpeg
     
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  19. sib

    sib Cruisin' Guzzisti

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    I believe that the V7 TC system needs to be reset even if you use the same brand/model tires.
     
  20. vagrant

    vagrant High Miler GT Contributor

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    CYA! On my second rear and first front Conti on my Iii and never followed that rule.. I would never use anything else if curves are in your future.
     

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