rather interesting tire pressure suggestion...
08-04-2003, 07:16 AM
#1
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Join Date: Dec 2002
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rather interesting tire pressure suggestion...
My wife was thumbing through her Honde CR-V manual last night and came across the suggested tire pressure from Honda. Honda says for everyday driving, fill the tires up to 26psi, fine. But, for "highspeed" driving, 100mph (which the don't recommend, the box might fall apart 
), the say to fill the tires up to 35psi 
!?
I was under the impression that the faster you drive the lower in pressure you'd want to go?
Any takers?
), the say to fill the tires up to 35psi !?I was under the impression that the faster you drive the lower in pressure you'd want to go?
Any takers?
08-04-2003, 07:28 AM
#2
My mom's GS400 owner's manual says somthing very similar. Normal pressure is 36psi. When driving over 100mph for extended periods, increase by 10psi.
The extra pressure stiffens the tire so it can absorb bumps better and not deform as much under side loads. If you run lower pressure, the sidewall will flex more even under straight line driving. This additional flexing leads to additonal heat in the tire. This excess heat can cause tire failure.
This is the leading theory behind the rash of Ford Explorer tire failures. To get a softer ride, Ford had specified a lower than ideal tire pressure.
The extra pressure stiffens the tire so it can absorb bumps better and not deform as much under side loads. If you run lower pressure, the sidewall will flex more even under straight line driving. This additional flexing leads to additonal heat in the tire. This excess heat can cause tire failure.
This is the leading theory behind the rash of Ford Explorer tire failures. To get a softer ride, Ford had specified a lower than ideal tire pressure.
08-04-2003, 09:19 AM
#4
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On a side note, the increase in pressure, I take it, holds only for tires other than, v or z rated tires...that is performance tires...naturally the lower profile and I would think the stiffer side walls, would result in an overall optimal pressure...that is if 'Tenza's need to be at 32-36psi, then stick to that....
08-04-2003, 10:40 AM
#5
Originally posted by NizanDrivn
On a side note, the increase in pressure, I take it, holds only for tires other than, v or z rated tires...that is performance tires...naturally the lower profile and I would think the stiffer side walls, would result in an overall optimal pressure...that is if 'Tenza's need to be at 32-36psi, then stick to that....
On a side note, the increase in pressure, I take it, holds only for tires other than, v or z rated tires...that is performance tires...naturally the lower profile and I would think the stiffer side walls, would result in an overall optimal pressure...that is if 'Tenza's need to be at 32-36psi, then stick to that....
Uh, what?
Please repost using complete sentences.
08-04-2003, 10:44 AM
#6
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Posts: 365
Originally posted by NizanDrivn
On a side note, the increase in pressure, I take it, holds only for tires other than, v or z rated tires...that is performance tires...naturally the lower profile and I would think the stiffer side walls, would result in an overall optimal pressure...that is if 'Tenza's need to be at 32-36psi, then stick to that....
On a side note, the increase in pressure, I take it, holds only for tires other than, v or z rated tires...that is performance tires...naturally the lower profile and I would think the stiffer side walls, would result in an overall optimal pressure...that is if 'Tenza's need to be at 32-36psi, then stick to that....
Filling the tire up 10psi over holds only for "regular" tires, not V or Z rated tires, right? The lower the profile, the stiffer the sidewall...
08-04-2003, 11:28 AM
#7
Originally posted by NizanDrivn
Sorry, I'm at work...
Filling the tire up 10psi over holds only for "regular" tires, not V or Z rated tires, right? The lower the profile, the stiffer the sidewall...
Sorry, I'm at work...
Filling the tire up 10psi over holds only for "regular" tires, not V or Z rated tires, right? The lower the profile, the stiffer the sidewall...
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