Nick_B
Registered: 14/02/09
Posts: 63
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Reply with quote | #1 |
Hi,
I'm thinking about changing the tyres on my CBF125 as the stock ones don't give me any confidence when cornering in the wet.
Only thing is, I can't find any that are a direct size replacement (F: 80/100 17, R: 100/90 17) - Podge has recommended Michelin Pilot Sportys for which the closest equivalents come up wider & lower profile (F: 90/80 17, R: 110/80 17).
I'm not worried about the width as I figure 10mm isn't going to make much difference (I can hear you sniggering...) but by my calculation the front tyre circumference would be a little over 6% less than the current tyre - would this mean that the speedo / odometer would over-read vs. actual speed / distance?
If so, do I need to get them adjusted (is this even possible?).
Any advice gratefully received as changing to tyres that grip better in the wet will mean I can put off using the train to commute & will save me about £130 a month (one month saving pays for the new tyres!).
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Heated grips are bliss!
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Simon
Registered: 15/01/07
Posts: 1,196
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Reply with quote | #2 |
I think it would all depend on the speedo. If it is cable driven normally from the hub of the front wheel it shouldn't make a difference.
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Tony
Registered: 08/03/07
Posts: 1,011
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Reply with quote | #3 |
If it does make a difference (and I can't say for certain that it will) I would suppose that your speedo would read 6% faster. At 60mph you would really be travelling at 63.6mph. Honda speedos are usually pretty accurate (I've checked the one on my CBR600 against my TomTom Rider) but that difference is insignificant and not worth worrying about I'd say. You would accumulate mileage 6% faster as well, so you'd be getting the bike serviced 240 miles sooner... assuming a 4,000 mile service interval.
But as Simon said, I'm not sure if it'll make any difference anyway.
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Cheers,
Tone
Interviewer: "What do you think of King Juan Carlos of Spain?
Kimi Raikkonen: "He's a very nice king." |
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