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Discussion Starter #1
Im looking at some new tires and the load capacity is at 639lbs. The bike is roughly 420 and Im 260. This doesnt ad up. Or am I missing something? It seems most of the klr tires have this same load rating!
 

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That's the load rating for one tire.

Assuming it is a rear tire, the front tire will have a slightly lower load rating, perhaps 600 pounds. You've got a total capacity of 1240 pounds.

My bike has a weight distribution, unloaded of 55/45. Lets say that, loaded, yours is 65/35.

Rear .65 * (420+260) = 442 pounds.
Front .35 * (420+260) = 238 pounds

The key here is how much you load onto the back, but there's such a large margin (200 pounds) that you're good to go.

Tom

p.s., My K761s are rated at 520 and 507. My bike weighs 425. My gear and I weigh in at about 260. No problem with tires.
 

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You're welcome, but do bear in mind that it is good to keep the weight distribution as even as possible between the front and the rear.

If the front gets too light it can lead to instability and shimmy in the front end. Tank bags are a good way to get some weight to the front that you might normally carry in the rear.

I chose 65% of the weight in the rear in the above example to make a point that your tire has plenty of capacity, but I don't recommend putting that much weight to the back.

I will repeat some good advice from Paul Westman - put two pounds more pressure in the front tire than in the rear. I run 36 front/34 rear most of the time. According to Paul, the skinny front tire likes it better that way and my experience, following his advice, says he is right.

Tom
 
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Discussion Starter #5
Will that tire pressure help reduce higher speed wobble? Another question about tires. Does an 18" on the front help reduce any wobble or instability? Or is that a waste of money?
 

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The 21" is less prone to a wobble.
Harder pressure removes some of the flex
that can induce a wobble.

My Nighthawk S with it's 15" front tire wobbled like a bad shopping cart wheel
no matter the tire or pressure.
 

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Does an 18" on the front help reduce any wobble or instability?
My KTM690 went from 21" front wheel to 19", a conversion by the PO (from 18" rear wheel to 17" also, BTW). PO said high-speed wobble reduced considerably with the smaller-diameter rims; YMMV ("your mileage may vary"). Intuitively, a larger-diameter rim would seem more stable, but many other variable factors enter the equation.

I find the bike stable at high speeds; some wind-waggle, as most lightweight bikes are susceptible to wind wander. Livable, but considering a steering damper.
 

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Discussion Starter #8
I adjusted my tires to 36 f 34 rear and seems to be much better. I started looking at new tires cause I thought the wobble I had experienced was a OEM tire issue. Checked my pressure yesterday and it was about 22lbs in each tire. LOL!!! But when I aired them up it wasnt the suggested tire pressure until I added more this morning. Between the correct tire pressure,klx kit,air box mod and new exhaust all this week this bike is a different beast.
 

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Glad to hear you're getting it sorted.

What tires are currently on the bike?

Tom
 

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OK. Those are generally good for 3000-5000 miles, so it is good that you're shopping.

They aren't horrible tires, they just don't last for beans.

Tom
 

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I will add that I run the oem tires at 21/21 psi and have no wobble at any speed. Im not trying to discuss the pros and cons of air pressure on different tires, but I fear if you are running at or near the max psi on that particular tire you may have an alternate cause for the wobble. And the near double air pressure may be masking it.
 

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Discussion Starter #13
OK. Those are generally good for 3000-5000 miles, so it is good that you're shopping.

They aren't horrible tires, they just don't last for beans.

Tom


I run mainly street and have been looking some street tires. but so many options! Kinda like Pirelli!
 

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Everyone has their favorite.

Paul gets good mileage out of Avon Gripsters, I get good mileage out of Kenda K761, wattman likes IRC GP110. The common thread there is high mileage, good on pavement, yet will do dirt.

Others like various DOT knobbies for their grip on the local terrain and some work better in dry desert sand and scrabble while others work better in wetter, loamier conditions.

Lots of fun research ahead on that topic!

Tom
 
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