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Maintenance & Repair Tires, tires, tires
7006 messages, Last post on Oct 29, 2009 at 11:24 AM
You are in the Maintenance & Repair Forum. Your Host is mr_shiftright
Edmund's Feature Article: Tire Safety: Don't Ignore the Rubber on the Road
For dedicated winter tires, also have a look at the Snow/ice winter tires discussion topic.
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And you were informed wrong, Marsha. (BTW, welcome to my world!!) Just a bit of clarification. The "P" only sort of stands for "passenger". It's on a truck, right? That means there is more to than that. The tire dealer was sort of right when he said that the "P" means 35 psi. That's true for Standard Load tires, but there are Extra Load tires, too, and those are 41 psi. However, the dealer is totally wrong if he thinks that 35 psi means 35 psi is the absolute maximum pressure. You see, the folks that make tire standards say that the load curve for P metric standard load tires ends at 35 psi and that's where the maximum load carrying capacity occurs. But the standards folks also say it is permissible (and they even hint at desirable) to use higher inflation pressures for certain circumstances. Those circumstances are generally higher speeds as experienced in Europe, but I think they are applicable any time someone exceeds 80 mph or the ambient temperature exceeds 100F. Those other "maximum's" are 44 psi and 51 psi for both P metric and Euro metric tires (without the "P".) LT metric tires are a whole different kettle of fish and in some respects have this same problem. For some reason Michelin seems to be the only tire manufacturer that doesn't put this higher inflation pressure on the sidewall, even though the standards say it is permitted. I can somewhat see that if the load curve ends at 35 psi, then putting 44 psi on the sidewall confuses people into thinking that the load curve ends at 44 psi (I can't tell you how many discussions I've had on that subject!!) On the other hand, there is your question. BTW, P metric tires have a static burst pressure over 100 psi. Now don't be thinking you can actually use 100 psi (or even 50!), but the point is that 44 psi is certainly well within the "safe" zone. I just wonder.......How does Michelin write this on the sidewall? If they say "Maximum XXXX pounds at 35 psi", then they aren't saying 35 psi is the maximum inflation pressure.......and all is right with the world! Hope this helps.
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Replying to: corvette (Mar 12, 2005 1:03 pm) However the fact that it is an OEM product with back up marketing hype is (unfortunately) the surest sign. The reason why is pretty simple. One real world measure is they want to be able to get the highest fuel mileage to publish with a straight face. Or more importantly not to get sued!! ") (:. So it behooves them to put in the LEAST rolling resistant tires as possible!! So for example on a VW Jetta TDI three "lower resistant" tires come oem. In rank order by poll of actual owners in the real world 1. Michelin MXV4 plus 2 Continental ContiContact Touring CH95 3 Goodyear Eagle LS-H.
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Replying to: ruking1 (Mar 13, 2005 8:03 am)
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Hello All, I am in the market for new set of tires for my car and have narrowed it down to BF Goodrich precept and Goodyear Allegra tires, both of them are available in Canada through Canadian Tire. I am confused on which one to buy, I am having tough time to figure out which one is more quieter and has better traction than the other one. I asked the service advisor at Canadian tire and he is saying Goodyear (reason they sell more of those and the tread pattern). I also did a quick search at Edmunds and found GoodYear Allegra tire referred in discussion forums a lot more than BF Goodrich Precept. I would like to know if anybody has Goodyear Allegra or BF Goodrich Precept tires on there car and what there experience has been like? Also from anybody else who has heard any good or bad things about these two tires? Thanks for all of your help. |
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Replying to: corvette (Mar 13, 2005 9:41 am) Also just as another poster has said the Michelin MXV4's has a few models. I hope he got the correct one for his needs.
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Replying to: ruking1 (Mar 17, 2005 12:28 pm)  MikeandKaren.cc”. Thanks, Mike
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Replying to: mkhphillips (Mar 19, 2005 9:47 am) Steve, Host |
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Replying to: capriracer (Mar 13, 2005 4:16 am) I had responded to a post that 44 psi was a burst pressure and that tires should not be inflated more than 1 or 2 pounds above the maker recommended pressure. The same post said the tires had to have a rounded sidewall or "otherwise the sidewalls will not flex enough to provide proper handling, ride control, etc." But I've always felt handling was better with 3 or 5 pounds more in the tires, especially fronts on FWD. Is that right or is control better with lower pressures? I've had a variety of cars with FWD, Century, LeSabre. But I even felt that true with RWD Mustang and Torino 73. How about that pressure above doorpost? |
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Replying to: alext (Sep 27, 1999 2:54 pm) What is your opinion on this gauge.? Im thinking of getting a digital gauge and came across the Michelin gauge. How does it compare to the accutire gauge?
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Replying to: nyyanks81 (Mar 19, 2005 8:13 pm) Steve, Host |
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