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Old 09-15-2011, 03:09 PM   #23 (permalink)
Vekke
Mechanical engineer
 
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Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 1,272

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
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A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
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Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
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Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
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A2 1.4TDI - '03 Audi A2 1.4 TDI
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A2 1.4 LPG - '02 Audi A2 1.4 (75hp)
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From current answers the good basic size would be be 155/80R14 + option for XL load rated version. That would fit easily to most cars here and the diameter would be 603mm or 23.74 inches. I think there would be only little gains to be had for going even narrower. Also what I have learned little bit wider tire gives better rolling resistance figures also.

In europe "truckers" (these F-250 etc...) are so little minority that there would not be any sense to make eco size there.
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