tyre calculator
Submitted: Sunday, Jan 08, 2006 at 13:03
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Member - Ozdyssey (QLD)
to work out circumference differences
e.g 235/85/16 to 265/75/16
is there one on the site or can someone give me a link?
Reply By: Snowy 3.0iTD - Monday, Jan 09, 2006 at 09:00
Monday, Jan 09, 2006 at 09:00
Ozdyssey
Circumfrence = PI (3.14 approx) x Wheel Diameter
Wheel Diameter(mm) = (Tyre Width(mm) x Aspect ratio x 0.01 x 2) + (Rim diameter (in) x 26.4)
So for example a 235/85/16 tyre:
Wheel Diameter = (235 x 85 x 0.01 x 2) + (16 x 26.4)
= 399.5 + 422.4
= 821.9mm
Circumfrence = 3.14 x 821.9 = 2581mm = 2.581m
A second example 265/75/16
Wheel Diameter = (265 x 75 x 0.01 x 2) + (16 x 26.4)
= 397.5 + 422.4
= 819.8mm
Cicrumfrence = 3.14 x 819.8 = 2574mm = 2.574m
You could try putting all of this in to a MS-Excel spread sheet or if you email me at snowdenj@onesteel it would take me five minutes to throw one together and send it out to you.
Kind Regards
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Follow Up By: Snowy 3.0iTD - Monday, Jan 09, 2006 at 09:16
Monday, Jan 09, 2006 at 09:16
Forgot to add that is @onesteel.com no au
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Follow Up By: Member - Bill F (VIC) - Monday, Jan 09, 2006 at 15:53
Monday, Jan 09, 2006 at 15:53
Hi Snowy
Please convert troopy skinny tyres 750/75.R16LT
Thanks
BillF
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Follow Up By: Snowy 3.0iTD - Wednesday, Jan 11, 2006 at 13:43
Wednesday, Jan 11, 2006 at 13:43
Bill I am not overly familiar with skinny tyres but I will assume you mean 7.5 inches wide not 750mm, ie 7.50/75 R16 LT
Tyre width 7.5 inches
Aspect Ratio 75
Rim Size 16 inch
7.5 inches x 26.4mm/inch = 198 mm tyre width
198mm x 75% = 148.5mm tyre wall height
16 inches x 26.4mm/inch = 422.4mm
148.5mm x 2 + 422.4 = 719.4mm total wheel diameter.
3.14 (PI) x 719.4 = 2260mm = 2.26m total tyre circumfrence.
Hope this helps.
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