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Could low tire pressure contribute to a crash

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Old 07-25-2018, 08:55 PM
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Default Could low tire pressure contribute to a crash

Just looking for input… 02’ Road King FLHR
Headed out for the weekend, fairly loaded, to stay out a couple nights, with the girlfriend on the back. Hot day, 35mph, slight downslope, easy on the brakes front and rear, slight lean to the left and BOOM, bike went flying out from under us and we went rolling down the road like rag dolls! Needless to say, our lovely plans were cancelled. I’ve been racking my brain, what went wrong? There was some recent road work, asphalt replacement, and there is the possibility of some oil or other vehicle fluid on the road, but I just wasn’t riding that aggressively, shouldn’t have really mattered? So, when I get home (we were able to ride home 20 min.) I checked the tire pressure. I spent the previous week doing all sorts of maintenance on the bike, and meant to check the tire pressure, but I had FORGOTTEN. Front tire had 20 lbs. and rear tire had 24 lbs.

I kinda cringed when I discovered that, considering we were pushing 1200-1300 lbs. with bike, riders and gear. Do you think low tire pressure was the main cause of this fall?

-Pat
 
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Old 07-25-2018, 09:34 PM
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Such low tire pressures would certainly affect the handling of your rig - especially loaded as you said. Thankfully it appears you guys are okay.
 
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Old 07-25-2018, 10:07 PM
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The two most important things to check before riding two up, is tire pressures and suspension pressure. Sorry you learned that the hard way. Did you tell your girlfriend that you may have screwed up? That might put the kibosh on 2up.
 
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Old 07-25-2018, 10:44 PM
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I took responsibility.... I was throwing everything I could think of at her to try and explain why. I put new fork oil, and new shocks, new front motor mount before the ride, so I was feeling pretty good about myself and the bike. We got a little scraped up, but nothing serious. I seriously just forgot to check the tire pressure, which I’m usually really picky about.
 
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Old 07-26-2018, 07:56 AM
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Yes! IMHO you should have checked your pressures first - perhaps next time! Give your girlfriend our best wishes for a speedy recovery.
 
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Old 07-26-2018, 08:16 AM
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Not saying it actually "caused" your event, but it probably was a factor. Glad you're Ok to ride another day...ride-on!
 
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Old 07-26-2018, 10:13 AM
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Thanks, guys.... I feel better.
 
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Old 07-26-2018, 10:15 AM
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yeah low tire pressure did it. Especially with 2 UP.
 
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Old 07-26-2018, 10:18 AM
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maybe low tire pressure combined with something slippery on the road , neither might have done it by themselves but combined with having the brakes on in a curve it was a bad combination .
 
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Old 07-26-2018, 11:15 AM
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I'm amazed that you didn't feel the handling difference with that low of pressure. It's like night and day. Of course, if they've been slowly diminishing in pressure and have been that way for a time, the change was gradual.

I personally put a gauge on my tires every couple of weeks, but do a 'billy-club' test before every ride. You never know when you might have picked up a nail or puncture, and when I'm bending hard into a fast turn I need to know my pressures are right. Glad you guys are ok, hopefully a lesson learned.
 


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