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Old 07-11-2023, 09:50 AM   #1 (permalink)
MorvanBen
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Join Date: May 2022
Location: France
Posts: 22

Multiboui - '07 Fiat Multipla
90 day: 48.37 mpg (US)
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Narrow tires with a bad fuel ranking or wider lrr tires?

Hi guys!

I am scratching my head on a super exciteing subject: tires!

First, should we write tires or tyres? 🤡
Then, I noticed that the more a tire is narrow, the less it is fuel efficient regarding the fuel ranking from A to E


If you want a A class, the narrowest you can find is 165, then few more in 175 and most of the A tires are between 185-205 large.

In 135, the best you can find is C
In 145 is B ( one size) the C
In 155 again you have 1 size in B then C
In 165 one size in A, few B then C
And so on

When it comes to fuel economy, you need a light car, narrow tires, not too much of friction, a small engine and a good scd. Super mini cars like C1, Aygo, 107, up!, Mirage, Cuore will have all those criterias because they are small ( except for the CD but the have a small fro Tal area)

I am thinking of taking a cheap eco car for my short trips and keep my diesel multipla for longer distances.
With spritmonitor, I noticed that the Daihatsu Cuore and the mitsubishi Mirage are very good when it comes to fuel economy, as well as the Suzuki celerio ( a bit rare and more expensive in 2nd hand)

So should I get the car that can legally have the narrowest tires? Should I get the one that can have tires with the best ranking?

Should I consider the weight of the wheels+ tires ? Like a C energy class tire in 135 R13 is better than a 165 R15 in A energy class?

What do you recon?

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