Rear tire weight rating on 82 Aspy....


Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
Latitude42
Posts: 8
Joined: Fri Feb 11, 2011 8:36 pm
Location: S. WI.
Motorcycle: 1982 GL1100 Aspencade

Rear tire weight rating on 82 Aspy....

Postby Latitude42 » Thu May 12, 2011 11:19 am



I ordered tires for my bike a month ago... supplier said they were in stock, to date I only have the front one, now the rear is backordered..

OK, I ordered the Dunlop Elite II 491.. the MR90-18 came for the front (760 lb rating), but the MU90B16 (930 lb rating) for the rear has yet to arrive, with no info on when or if it ever will. Should I settle for the Dunlop Elite II 491 MT90B16 (830 lb rating), or go to another supplier and hope I get my $$$ back for the one on backorder???

This is my first wing, been on Harleys for decades, not sure what the wing requires...

Thanks,

Latitude42



User avatar
eklimek
Posts: 307
Joined: Tue Feb 15, 2011 1:55 pm
Location: St Catharines Ontario Canada
Motorcycle: 81 GL1100 (Widowmaker not in service), 83GL1100, CB350f x 6, CB400f x2, CB550f sold, CL350 (seized engine), plus enough donors to take me through retirement.

Re: Rear tire weight rating on 82 Aspy....

Postby eklimek » Fri May 13, 2011 8:22 am

I thought others would have a better answer but here is my understsanding of the question.

The weight carried by the contact patch is determined by the maximum air pressure of the tire and surface area of the foot print. A 650 pound machine with 200 pound rider will have the rear at 830 lb maximal weight carrying capacity during acceleration. It would be exceeded with passenger and baggage since they are borne by the rear wheel alone. To compensate and maintain the tire cross section and foot print one would have to exceed recommended tire air pressure.

User avatar
RoadRogue
Posts: 1913
Joined: Sun Jun 06, 2010 10:51 pm
Location: Castlegar BC, Canada
Motorcycle: 1997 1500SE

Re: Rear tire weight rating on 82 Aspy....

Postby RoadRogue » Sat May 14, 2011 12:02 am

If and only if you did not carry a passenger and if you didnt load your saddle bags and trunk very full, you might get away with the lighter tire.If you overload it the tire will flex more ,flexing generates heat,heat wears tires out faster. If you cant get the tire you ordered then get a refund and go find a dealer that will get you what you want before taking your money. I ride on Avon Venom X front and rear, I really like them , just bought my 3rd set in a row.

Ok I just went for a ride to the store to get breakfast supplies for tomorrow morning,while I was out i took my 82 aspy over the truck scales just out of town (any excuse to go for a ride) With my fat arse(about 220lbs) on the bike we weigh in at 1034lbs/470kg total. Front wheel 375 lbs/170kg , rear 660lbs /300kg. as you can see by these numbers if I was running the 830lb tire I would only have 170lbs of passenger and gear before I was overloading the rear tire. Thats not much of a margine of saftey in my world.

Now you have some real world numbers to play with. Ride safe,Todd
Ride safe, Todd
Over night campers welcome

User avatar
eklimek
Posts: 307
Joined: Tue Feb 15, 2011 1:55 pm
Location: St Catharines Ontario Canada
Motorcycle: 81 GL1100 (Widowmaker not in service), 83GL1100, CB350f x 6, CB400f x2, CB550f sold, CL350 (seized engine), plus enough donors to take me through retirement.

Re: Rear tire weight rating on 82 Aspy....

Postby eklimek » Sat May 14, 2011 8:02 am

http://www.goodyearaviation.com/resourc ... LhAw_-NiWx

see page 48

"A discussion of aircraft tires would not be complete without showing the effect of LOAD and SPEED on the TENSILE,
COMPRESSION and SHEAR FORCES within a tire."




Return to “GL1100 Information & Questions”




Who is online

Users browsing this forum: Bing [Bot] and 2 guests