MPH WITH DIFFERENT WHEELS AND TYRES
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- Gunslinger
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MPH WITH DIFFERENT WHEELS AND TYRES
I remember seeing a thread some time ago, but cant find it now, that showed how to calculate the % diiference in speedo readings when different size wheels and tyres have been fitted.
Can anyone help?
Can anyone help?
- steve8090
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
http://www.alloywheels.com/tyrecalc.asp" onclick="window.open(this.href);return false;
Steve Shaw
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Full Service, LPG conversions, Security and Camper Accessories.
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- Gunslinger
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
Thanks Steve, thats the one.
Now who can tell me the size of the standard wheel and tyre, particularly the profile. I know its a 14" wheel
Thank you
Now who can tell me the size of the standard wheel and tyre, particularly the profile. I know its a 14" wheel
Thank you
- steve8090
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
185 70
Steve Shaw
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Full Service, LPG conversions, Security and Camper Accessories.
see http://www.gasure.co.uk for full details.
01244 659740
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Full Service, LPG conversions, Security and Camper Accessories.
see http://www.gasure.co.uk for full details.
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- Gunslinger
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
Thanks again Steve
- andisnewsyncro
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
steve8090 wrote:185 70
I always believed if the tyre didn't specify a profile like 185R14, it was an 80 or even 82 ?
What a long strange trip it's been
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
Technically it's 82 but they don't bother actually including this figure in the tyre markings as it is regarded as being standard.
Don't forget that all mechanical speedo's read approx 10% too high to keep drivers in the safe zone and to compensate for tyre wear etc. So typically a speedo reading of 44mph is about 40mph with an accurate Sat Nav.
Martin
Don't forget that all mechanical speedo's read approx 10% too high to keep drivers in the safe zone and to compensate for tyre wear etc. So typically a speedo reading of 44mph is about 40mph with an accurate Sat Nav.
Martin
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- andisnewsyncro
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
I moved up to 195R15 from 185R14 which is about 6.4% increase and my speedo is now pretty much bang on with the sat nav reading at 50, 70 & 100 k/ph if that's any help at all
What a long strange trip it's been
- Gunslinger
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
I wonder if my sat nav records my MPH
- lloyd
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Re: MPH WITH DIFFERENT WHEELS AND TYRES
Stock tires are 185 x 82, and yes, satnav should give mph depending on setting you are using in it.
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