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Whats aspect ratio?? All i know is the 130 is 130MM wide..90 is 90MM tall from the rim to the tread surface and the 17 is the rim size.
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MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it. -
130/90-17 The 90 means the height is 90% of the 130mm width. So the aspect ratio is 90.Last edited by tkent02; 08-03-2011, 10:21 AM.Comment
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The metric tires started up in the early 80sOriginally posted by FLHGSRay View Post
I haven't seen a 4.50 tire since I can't remember when.
That thing is old, old and old1978 GS 1000 (since new)
1979 GS 1000 (The Fridge, superbike replica project)
1978 GS 1000 (parts)
1981 GS 850 (anyone want a project?)
1981 GPZ 550 (backroad screamer)
1970 450 Mk IIID (THUMP!)
2007 DRz 400S
1999 ATK 490ES
1994 DR 350SESComment
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Just heard from Dunlop.
"Thank you for taking the time to contact Dunlop Motorcycle & ATV.
Look for the letters DOT. Will be only on one side of the tire.
After the letters DOT there is an alpha-numeric sequence approximately 10-12 characters long.
The last three digits of this sequence will give you the date. Will be stamped on tire.
example: 349...will be 34th week of 1989 or 1999
Through 1999 three digits were used.
As of 2000 four digits were used.
example 3409.....34th week of 2009.
Should you need further information or assistance, please call Dunlop Consumer Affairs @ 800-845-8378
or e-mail us.
regards,
Virginia Gallant
Consumer Affairs Representative
Consumer Affairs
Dunlop Motorcycle & ATV Tire Division
Goodyear/Dunlop Tires N.A., Ltd
PO Box 1109
Buffalo, NY 14240
Ph: (800) 845-8378 Fax: (716) 879-8425"
Doesn't mention the triangle, but DOT DA1X M86119 is an "alpha-numeric sequence approximately 10-12 characters long". I'm still going with the 11th week of 1989.
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Coming up on 21 years old!
Go buy them a drink!1978 GS 1000 (since new)
1979 GS 1000 (The Fridge, superbike replica project)
1978 GS 1000 (parts)
1981 GS 850 (anyone want a project?)
1981 GPZ 550 (backroad screamer)
1970 450 Mk IIID (THUMP!)
2007 DRz 400S
1999 ATK 490ES
1994 DR 350SESComment
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Not trying to beat a dead horse here, just trying to learn something about dating tires. An update from Dunlop.
"I have looked back as far as I can and found the first evidence of D401
Elite S/T in 1990
Sorry, do not have any information on a triangle symbol.
In case you did not receive the last e-mail message I sent ;
Here is a copy:
Good afternoon Ray,
Thank you for taking the time to contact Dunlop Motorcycle & ATV.
Look for the letters DOT. Will be only on one side of the tire.
After the letters DOT there is an alpha-numeric sequence approximately
10-12 characters long.
The last three digits of this sequence will give you the date. Will be
stamped on tire.
example: 349...will be 34th week of 1989 or 1999
Through 1999 three digits were used.
As of 2000 four digits were used.
example 3409.....34th week of 2009.
Should you need further information or assistance, please call Dunlop
Consumer Affairs @ 800-845-8378
or e-mail us.
regards,
Virginia Gallant
Consumer Affairs Representative
Consumer Affairs
Dunlop Motorcycle & ATV Tire Division
Goodyear/Dunlop Tires N.A., Ltd
PO Box 1109
Buffalo, NY 14240
Ph: (800) 845-8378 Fax: (716) 879-8425"Comment
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