03-16-2021, 06:10 AM | #16 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Quote:
The recommended pressure by Lifan is for the best combination of ride quality, grip, and fuel economy for that given tire on that bike. You could inflate the rear to the max pressure, but it would ride like crap unless you were riding two up with a big fat guy like me on the back.
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03-16-2021, 06:11 AM | #17 | |
Join Date: Oct 2016
Location: Carrollton, GA
Posts: 1,467
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Quote:
2 - That's the maximum safe inflation pressure for the tire. A tire doesn't tell you how much air it should hold, just how much it safely can hold. The recommended tire sizes and pressures should be on a sticker on your swingarm or the underside of the seat. If your tube has a lower air pressure rating than your tires, then that lower rating is your upper limit, if that makes sense. In this instance, you mentioned 30psi on the tubes, and 40psi on the tires. That means that your upper tire pressure limit is 30psi. That seems pretty low to me, honestly. The heavy duty tubes I got last year for the Desert Scramble we did up to Wickenburg have a rating of 50psi, I think. It might have been 60psi. For general street use and some of the easier dirt trails, you want the tire to be the limiting factor, not the tube inside the tire. The tire, after all, is what hooks you up to the surface your riding on. Hope this helps!
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03-16-2021, 08:16 AM | #18 |
Join Date: Feb 2021
Location: Northeast
Posts: 934
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When all else fails, read the manual, right? Ha ha.
So I fount this. Lifan x-pect Max pressure cold: front 40.6psi | rear 40.6psi Recommend pressure: front 25-29psi | rear 29-32.6psi Still fairly confusing because of the upper limits in the tire pressure chart. I’d think you can go up to 40 for on road and those lower pressures for off road. As in maybe their recommended pressure is for dual sport riding? But I could be wrong and the recommended pressure might also be what the tubes dictate. Not entirely clear. The chart feels like the one I looked at yesterday for Chinese sun shade shirts. They had a men’s medium at 140lbs, with a 36 inch waist. Ha ha ha. Those numbers don’t go together.
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2020 Lifan x-pect |
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03-19-2021, 10:47 AM | #19 | |
Join Date: Feb 2021
Location: Northeast
Posts: 934
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Double checking this information. I got the tubes. They are
110-100/90-19 going on a 90/90-19 wheel for road. Is that ok? and... 120/90-17 going on a 110/90-17 wheel for the road. Is it more safe to keep the stock Chinese Lifan tubes in there that are perfectly sized? Or would it be more safe to change to these larger tubes, but given they are Michelin, they are better? Mostly I’m worried about losing a tube on the road. Off-road I don’t really care. It is soft and slow. Quote:
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2020 Lifan x-pect |
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03-19-2021, 01:08 PM | #21 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Nothing wrong with wanting to do things right, but yes, you are definitely over thinking this.
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12-14-2022, 04:42 PM | #23 |
Join Date: Sep 2022
Location: Ohio Valley
Posts: 745
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I was wondering what you guys have experienced with the X-pect stock tubes. I did a search on here but I am not good with it for some reason. Just curious if I need to change them immediately or whether they can wait. thanks in advance.
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12-15-2022, 07:47 PM | #24 | |
Join Date: Feb 2021
Location: Northeast
Posts: 934
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Quote:
I had approximately 5000 miles on mine and they were absolutely fine when I removed them to change the tires. They were actually pretty good quality.
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2020 Lifan x-pect |
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12-16-2022, 09:23 AM | #25 |
Join Date: Dec 2020
Location: Dayton Pa.
Posts: 941
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Boatguy I have 5000 miles on my TBR7 and still useing stock tubes. Was going to change when I put knobby tires, but used the stock ones. Still have the new ones I bought with my new tires, saving them for when I get a flat tire. Just about to get a new back tire again, and will install new tube then. Bit will save the stock tube in case of a flat tire.
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12-16-2022, 11:41 AM | #26 | |
Join Date: Nov 2022
Location: Dallas TX
Posts: 610
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Quote:
Sounds just about spot on. The Templar X 250 has a sticker on the bike that says recommended front 28 psi and rear 31 psi. That is in contrast to the generic owners manual that has 20 psi for both listed. You run lower psi off road depending on track conditions so I use the recommended psi for street.
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12-16-2022, 04:23 PM | #27 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Tire pressures should also be adjusted for load. Those recommended pressures are for a certain weight of rider and gear. Add a big giant American like me, or a bunch of luggage, and you often need to increase those pressures for road riding.
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