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JP Wing
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Posted: Sun May 11th, 2008 05:08 pm | 1st Post |
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For most of you, this is probably fairly basic. I can find plenty of info about tire load ratings as well as vehicle load ratings but nowhere are the two connected by a simple formula.
Dunlop D 404's for a GL1200 (130/90-16 Front & 150/90-15 Rear) have relative load ratings of 677 lbs @ 41psi and 827 lbs @ 41psi.
I'm assuming that this means the tires together can handle up to 1504 lbs. I do understand that the rear carries a greater proportion of weight than the front.
GL1200 dry weight is 705 lbs. Adding another 50 lbs or so for fluids this brings the vehicle "wet" weight to 755 lbs. The stated "load capacity" is 425 lbs - meaning (to my simple way of thinking) that vehicle and load are max'd out at 1180 lbs.
Now...if the missus and I ride with assorted gear, I'm estimating our load at 420 lbs.
Vehicle wet weight + load = 1175 lbs. Tires can handle 1504 lbs.
Am I correct or do we both need to go on the "tree bark diet"? Or...do I fork out the $$$ for Elite III's?
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JP Wing
85 GL1200 Interstate
Two of the best riding tips I ever got...
1. Ride like you're invisible
2. It's always a good idea to stop your bike before getting off!
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exavid
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Posted: Sun May 11th, 2008 05:50 pm | 2nd Post |
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Yep, your tires can support 1504lbs. Your bike is built to handle a total load of 1175lbs. What that means in practice is that you aren't riding on tires that are carrying their maximum load limit which is a good thing. Age, possible manufacturing defects, road damage all can and do weaken tires so it's far better not to run to the maximum load if it can be avoided.
Your rear tire does carry more weight than the front, I've never actually weighed the two wheels on my bike but it looks like about a 60/40 with the rear carrying the 60%. With a passenger the balance would be more like 70/30 or in that range. That's part of the reason your rear tire is larger than the front along with the added tread area to handle the acceleration loads.
You and the missus and extras don't exceed the maximum load per Honda's recommendation so you've no need to go on the sawdust diet. Many ride with loads well in excess of Honda's GWR and don't have problems though they may experience lessened quality of handling and braking. Just the fact the swingarm is compressed a bit further lowering ground clearance reduces handling in the twisties among other things.
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If you can't ride, fly or sail it, why bother?
Paul W.
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JP Wing
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Posted: Sun May 11th, 2008 08:00 pm | 3rd Post |
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Thanks Exavid!
The D 404's were more of a budget issue. The handling, compared to the low tread Elite II's I replaced, has been remarkable. I do have progressive air shocks and usually run them at about 56 lbs when riding 2 up.
I have ordered a 0-60psi Progressive Air Pump and plan to carry that at all times - front & rear tires, front forks & rear shocks all require constant monitoring.
Thanks again.
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JP Wing
85 GL1200 Interstate
Two of the best riding tips I ever got...
1. Ride like you're invisible
2. It's always a good idea to stop your bike before getting off!
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exavid
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Posted: Sun May 11th, 2008 11:30 pm | 4th Post |
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| That's about the same pressure I carry on the rear shocks when 2 up also. I don't use any air in the forks on my progressive equipped 1100 or 1500 whether riding 2 up or solo. Solo I usually carry around 20-25psi in the rear shocks of both bikes.
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If you can't ride, fly or sail it, why bother?
Paul W.
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sle104
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Posted: Sun May 11th, 2008 11:59 pm | 5th Post |
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| I just put d 404 on my 82 gl 1100 I it is a great tire for the price. It handles a higher load than the eleits 2 that came on the bike but not as much as the 3s
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tory
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Posted: Mon May 12th, 2008 12:35 am | 6th Post |
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Im not sure right this second what size my bikes rear takes but I see the source that I used to discourage me from using the 404s, http://www.dunlopmotorcycle.com list the weight ratings for the 404s all over the spectrum.
I do remember my E2 was around 900 and my E3 is 930,(mu90- 16)but I seem to remember that the correct size 404 for the 83 1100s was a 130-90-16 at 677lbs or a 140-90-16 at 761LBS
If I assume my bike,dressed and loaded to be aprox.800lbs,me at a good 275 and the wife at 190 Im at 1265.I think with us anyway we are closer to 70-30 weight balance,but 60% of that is 759lbs(I am ofcourse giving myself a little cushion for luck)
759lbs was not comfortable to me on a 677 or even a 761lb tire.And thats not considering the trailor
I do however see that the 404s come (depending on size)in many differant weight ranges and yours is higher rated than what I saw as mine.
I am sorry if I caused you any unnesecary stress.Just was trying to help.
http://www.dunlopmotorcycle.com
Last edited on Mon May 12th, 2008 12:49 am by tory
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1983 gl1100 interstate
1979 gl1000
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JP Wing
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Posted: Mon May 12th, 2008 12:44 am | 7th Post |
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Although I would rather have E III's, as I mentioned before, it's a budget issue. The E II's I removed were sorry. The rear tire showed signs of long term use at low pressure. There was a very distinct and sharp angle from sidewall to traction patch.
The rear end would get a bit squirrely on the twisties. Solo, I could compensate but 2 up...no way.
Anyway, glad to have decent rubber. When you pick up a Wing for not a lot of money, it's important to prioritize your maintenance tasks.
Safety and stability are my main concerns.
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JP Wing
85 GL1200 Interstate
Two of the best riding tips I ever got...
1. Ride like you're invisible
2. It's always a good idea to stop your bike before getting off!
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