Beat the EPA on a Road trip
#1
Beat the EPA on a Road trip
Took the family (four of us) to visit Grandma in Chicagoland last weekend (~375mi from Columbus Ohio).
Tires at 44psi, ran 65-70mph using CC and had the AC on both ways.
49.7/51.0 mpg to/from Chicago - these hybrids are pretty good.
Tires at 44psi, ran 65-70mph using CC and had the AC on both ways.
49.7/51.0 mpg to/from Chicago - these hybrids are pretty good.
#2
Re: Beat the EPA on a Road trip
sigh, if only my trips were that direction. I go from Columbus to Annapolis (420 miles), so the terrain is a major bad thing...If I average 65-70 mph I only get about 40-45 mpg, though my tires had been at 36 psi for those trips
I finally got around to inflating my tires to 41 psi. I think its made a huge improvement. My last trip I averaged 52 mph (wow it took forever) and got 61 mpg. No A/C (though it was 80 degrees, I just used vent air on full blast). I was at 64 mpg for a while but then I think I hit some winds. I would infate to 44, or more, but on those long inclines down the mountains (at very fast speeds) I don't want them them to overheat and blow out? My dad told me not to infate them to max, though I wanted to!
You got some very good numbers for those speeds with A/C! I still havn't hit 3,000 miles yet on my odometer. Maybe my car is still breaking in.
I finally got around to inflating my tires to 41 psi. I think its made a huge improvement. My last trip I averaged 52 mph (wow it took forever) and got 61 mpg. No A/C (though it was 80 degrees, I just used vent air on full blast). I was at 64 mpg for a while but then I think I hit some winds. I would infate to 44, or more, but on those long inclines down the mountains (at very fast speeds) I don't want them them to overheat and blow out? My dad told me not to infate them to max, though I wanted to!
You got some very good numbers for those speeds with A/C! I still havn't hit 3,000 miles yet on my odometer. Maybe my car is still breaking in.
#4
Re: Beat the EPA on a Road trip
[quote=owlmaster08;125049] I would infate to 44, or more, but on those long inclines down the mountains (at very fast speeds) I don't want them them to overheat and blow out? quote]
Your tires actually run cooler at higher inflation pressure than the factory pressure. If you go to the tire manufacturer sites they usually have a little hint to inflate higher than normal for long highway trips. Don't worry about a blowout, you can't inflate them high enough, blowouts happen from underinflation and heat buildup.
Wayne
Your tires actually run cooler at higher inflation pressure than the factory pressure. If you go to the tire manufacturer sites they usually have a little hint to inflate higher than normal for long highway trips. Don't worry about a blowout, you can't inflate them high enough, blowouts happen from underinflation and heat buildup.
Wayne
#5
Re: Beat the EPA on a Road trip
My Wife and kids did not seem to mind the ride - I70 and I65 are pretty decent highways, though some rougher portions you could feel (and see FE drop).
Thanks on the FE - plenty of opportunities to draft in a convoy of trucks using this route and most of them are going 65-70mph. I did notice most other cars were going 75mph+....
#6
Re: Beat the EPA on a Road trip
Your tires actually run cooler at higher inflation pressure than the factory pressure. If you go to the tire manufacturer sites they usually have a little hint to inflate higher than normal for long highway trips. Don't worry about a blowout, you can't inflate them high enough, blowouts happen from underinflation and heat buildup.
Wayne
#7
Re: Beat the EPA on a Road trip
At this pressure, they could've exploded off the rims AS they were being aired up, let alone while driving.
And, no - it wasn't ME
#8
Re: Beat the EPA on a Road trip
I have mine at 51psi (MAX on sidewall) but not for any gains in FE. I noticed little if any going from Honda' recommended tire inflation spec. The ride is a little firmer but the handling has improved... especially in the rain.
Last edited by livvie; 05-18-2007 at 12:20 PM. Reason: 51psi is the MAX psi according to sidewall of tire
#9
Re: Beat the EPA on a Road trip
We're taking a trip to the Keys soon. We intend to get the best MPG we can (especially with gas near $3/gal. here and well above that down there). I'll check the tires to insure they're at least 40 PSI, we'll keep to the speed limit on CC, and we'll use A/C as little as possible.
#10
Re: Beat the EPA on a Road trip
Steve you are correct in your warning about over-inflation.
There may also be insurance and liability issues by knowlingly introducing an unsafe condition.
The tires should never be inflated above the maximum level imprinted on the them. Check each tire if you run different models, the rating may be different.
There may also be insurance and liability issues by knowlingly introducing an unsafe condition.
The tires should never be inflated above the maximum level imprinted on the them. Check each tire if you run different models, the rating may be different.