Quote:
Originally Posted by larrybuck
Everybody should be safe w 5-7psi over sidewall #'s Remember, the figure is LAWYER'S TALK! They are not the IRS! They love to sell tires, and the Veh. Manu. is going to pick a psi for a comfortable and non lawsuit ride! 41 psi works great for my CRX. You'll never find a cheaper or easier mod. Above 5-7 over; I could picture more strut wear... use balance! Question: We all know that an older tire gets harder...not the hot tip for drag/roadracing...but; would a harder tire that's not going to be pushed to lets say 7/10ths of its remaining grip... would that firmness compliment some extra psi for even more mpg.'s in other words... would that harder tire wear down slower than a newer tire? I understand motorcycle bumping up uncomfortable for some... stay in your comfort zone... but if you are hypermiling; you won't be that fast to worry about any difference!
|
I am using 10 PSI over the sidewall max. technique for more than 8 years, with over 200,000 km driven so far. SUVs, luxury cars, training cars, passenger cars.
I drive at least once a month over 2,000 miles (between two cities) for the past 3 years; snow, rain, Nevada scorching hot road in the summer, etc. I had never, I repeat...NEVER have a tire incident. On this 2,000 miles road trip, over the years I have driven Toyota Highlander, Chev Tahoe, Suburban, Subaru Tribeca B9, Mercedes CLK 500, Mazda Protege, Crown Victoria (most of the time), Mini Cooper, BMW 550i.
I have 5 training cars, all Crown Vics, they all run on 50 PSI (41 sidewall max.)
People like CapriRacer they say there is no empirical evidence that running a tire at the sidewall max. or over is beneficial, but he never presented an empirical evidence that running a tire at the sidewall max. is dangerous, illegal or detrimental to the vehicle or driving performance.
He never presented an evidence that hyperinflation is worst than underinflation.
The only "drawback" while driving on high PSI is a stiff ride.
But as a professional driver, I want my ride to be stiff, I need to feel any vibration of the road or slide of the car thru the seat of my pants.
I don't want a cushy ride so that I will be taken by surprise by an over-steer.
On the other hand, under-inflation of tyres, because let's be serious...at 32 PSI a tire is underinflated, affects many different types of crashes, often in subtle or indirect ways.
Underinflated tires can result in:
• reduced vehicle handling
• increased braking distance
• increased likelihood of blowouts
• increased tire wear
Last but not least, since this is an ecomodder forum, in addition to road safety consequences, underinflated tires can be associated with environment costs such as increased greenhouse gases associated with lower millage per tire, increased fuel consumption and disposal problems.
Please CapriRace tell me (once again) I have the wrong data or I am misinformed or (your favorite) my facts are not straight.