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Old 01-21-14, 10:25 AM   #1
markrivers
Lexus Test Driver
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Join Date: Aug 2011
Location: California
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Default Hypermiling the 2013 RX 350 = 40ish mpg

Hi guys!

i got a little bit bored this 3 day weekend,
so i have decided to do what my " Prius" friends are doing with their cars. Hypermile.

Basically, they put a lot of air on their Low Rolling Resistance Tires for better mpgs.
most do 45, while i know some who puts 60psi.

Hmm.. so let's test that on a 2013 RX 350 running on regular unleaded 87 octane ( Costco gas) with OEM tires ( Dunlop Grandtek) and 19 inch rims.
every gauge was reset to ZERO
trip A
average mpg
average speed

here's my baseline: i do 85% highway and 15 % city driving.

Click the image to open in full size.

and here's what happened after putting 38psi ( too scared to do 40)

Click the image to open in full size.

and nearing the end of my commute

Click the image to open in full size.

and at here's the final

Click the image to open in full size.

Disclaimer: i don't recommend this practice at all.
Overinflating the tires can give you a lot of mpgs but it can be unsafe
Although, aside from a bumpier ride, i didn't feel any difference in the drive.
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Last edited by markrivers; 01-21-14 at 11:03 AM..
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