What tire pressure are you running?
07-21-2008, 03:40 PM
#11
Senior Member
Join Date: 12-30-2006
Location: Lake Conroe, Texas
Posts: 1,141
I've been running 44 in mine. Yes the ride is rough, but the pay-off is worth it on the gas end. The pressure branded on a tire sidewall is a recommended max pressure. For the best tire life you should always go by what is on the vehicle door placard. The higher the pressure, the least amount of rolling resistance but rougher ride and rapid tire wear while increasing MPG. Lower pressure is a much softer ride with more rolling resistance, thus lowering your MPG. Too low pressure causes massive heat build up in the tire carcass resulting in catastrophic tire failure (Firestone/ Ford fiasco).
07-21-2008, 04:30 PM
#13
Senior Member
Join Date: 03-31-2008
Location: CLEVELAND
Posts: 772
ALL GASSES EXPAND WHEN HEATED. EMPHASIS ON "ALL"
(PV=NRT 22.4 LITERS PER MOLE AT STP can't change T with out changing P in a closed system)
LIQUIDS EXPAND HUGE! WHEN THERE IS A CHANGE OF STATE INTO GAS.
(TOSS A LIQUID CO2 CARTRIDGE INTO A HOT FIRE)
(or a mole of water weighs 18 grams wich is about 18ml= 0.018liters....heat it up until it turns into a gas voila volume changes by 22.4/.018 haha big number)
SMALLER MOLECULES ESCAPE ANYTHING FASTER THAN LARGE ONES.
(HYDROGEN CAN PASS THROUGH THE DENSEST METALS LIKE A GOLF BALL THROUGH A SOCCER NET, which is one of many reasons hydrogen powered cars is just a dream for now)
No need to calm myth busters. Just ask the SS drivin Chem-E
07-21-2008, 04:43 PM
#14
Banned
Join Date: 05-03-2008
Location: Lansing, Mi
Posts: 138
I run at 35 per sticker on drivers door frame and hate it. The car on hot days goes up to 38 and runs like a lumber wagon on rough roads. I would like to see a 16" wheel with a larger sidewall to obsorb the chuckholes without bending the wheel so we could run less air. I think the smaller the sidewall of a tire the more air is needed in case we hit a hole in the road. this way it won't dent the rim.
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07-21-2008, 08:02 PM
#17
Member
Join Date: 09-11-2007
Location: Alabama
Posts: 43
I just put Nitrogen in my 2006 HHR. I am running BFG Traction T/A 215X50X17. The car seems to roll better, and possibly smoother but I have not noticed anthing related to fuel economy. I went to a tire shop and had it done for $10 per tire. Their claims were: (1) keeps tire cooler (2) keeps tire interior drier (3) more consistent pressure due to larger molecule in Nitrogen not as prone to leak out. Just 2 cents worth.
07-21-2008, 09:36 PM
#19
Senior Member
Join Date: 01-19-2008
Location: Chicago, IL (Waukegan)
Posts: 1,658
I am running 38 PSI cold and it gets to about 41-42 PSI hot... I believe the sidewalls said 45 if I remember correctly so I am trying to get the max PSI while keeping under the max recommended for the tire.
I plan to upgrade the tires before long anyways with the winters we have here in IL.
I plan to upgrade the tires before long anyways with the winters we have here in IL.
08-06-2008, 06:47 AM
#20
Senior Member
Join Date: 06-21-2008
Location: Dallas, Texas
Posts: 332
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