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Old 05-29-2009, 03:28 PM   #27 (permalink)
Eddles
EcoModding Apprentice
 
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Join Date: Apr 2009
Location: Sheffield, England
Posts: 142

Eddles's Astra - '01 Vauxhall Astra ECO4
90 day: 61.03 mpg (US)
Thanks: 41
Thanked 3 Times in 2 Posts
Quote:
Originally Posted by ShadeTreeMech View Post
try it for yourself. Inflate all your tires as much as you dare, get to a set speed, brake as hard and fast as possible, and measure your distance. Then try again with the pressure listed on the vehicle information label. Your stopping distance will be much less.
Okay, let's look at my manual here. Feast your eyes on the unladen front tire pressures for the Y17DT engine on the leftmost column. It is all 35 PSI no matter what tire is used. The 61 PSI tire is just the "space saver" spare. Now look at Y17DT (ECO4). Now it says 41 PSI. Tell me why can't a Y17DT owner inflate his/her tire to 41 PSI? It's the exact same car. Also note the pressures for the ECO4 rear tires when fully loaded? It says 49 PSI. If it's really unsafe for me to run my tires at 49 PSI, why would a manufacturer of the 2nd most common car in the UK that weights only 2,500 lbs recommend this?
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My aim: to achieve 3L/100km.
Best tank @ 65mph: 864.2 miles 69.36MPGus 3.4l/100km
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