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luckey9
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PO have installed 100/90X18 front & 150/80 x 16 rear on my newly acquired GL-1500
A service technician advised me to remove them asap. I know they are not the oem sizes however is it a dangerous combination for low mileage driving. They are in good condition but should i change them for next season.
 

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Those tires are probably not up to the weight capacity of the 1500. Unless you are pretty small and never ride 2 up it would be a good idea to replace them.
 

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I agree with Dave you might be pretty well undergunned with those tires. You can look at the load and maximum speed rating on the tires, and determine if the tire is suitable for your bike. The Dunlop E3 rear tire on my bike is rated at a bit over 900lbs which is around 400 kilos. Usually you can go to the manufacturer's website and get that info too. If the tires are rated under what you can reasonably expect a 1500 to exert on them then I'd replace them. You need a reasonable cushion in the load rating because potholes and road junk could overload the tire momentarily and that's all it might take to blow one. It ain't much fun handling half a ton of bike and rider when a tire blows.

http://www.amadirectlink.com/roadride/Riderresc/tires.asp
 

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Listen to Dave... I ride a 1500 with gear and two up a lot and even alone I would want the best tire money can buy under me cause a 1500 sometimes can get a mind of its own in the twisties.

You need all the "footprint" you can get on these animals.
 

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luckey9
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Discussion Starter · #5 ·
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Thanks for the reply's and tire info site. I don't understand why the PO who was not a solo rider and did high mileage put these under size tires on, tho i guess it comes down to dollars and a quick sale to someone like myself who only looked at the NEW tire aspect of it. I shall seek out the proper size tires for my solo riding next season.
Thank you again.
 

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Make sure they are bias ply tires and not radials .. Ciaran
 

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luckey9
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Discussion Starter · #7 ·
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I checked my existing tires today and noted front is rated at 461 lbs and rear at 761 lbs. I ride solo but it looks that this is border line.
 

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The correct tires are rated at 600lb front and 853lb rear.
 

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Piaggio MP3, was 02 GL1800
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Good tires equal good life insurance.
 

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I had my 1500 weighed and it was 140kg (310lbs) on the front and 270kg (600lbs) on the rear. Then you've got to add rider+pillion+gear. Your tyre ratings aren't looking so good :(
 

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Piaggio MP3, was 02 GL1800
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dakotawings wrote:
are bias better on the 1500 than radials?
The 1500 rims weren't designed for radials.

That said, there have been a few folks who used radials, but I don't know who they were.

General consensus is don't put radials on a 1500.
The Michelin Pilot GTs are my favorite tire.
 
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