How much does tire and wheel weight effect MPG?

[Fast Guy]

Originally Posted by Fast Guy

You must have different tyres to what we can get over here as I've never heard of a profile lower than 30 or 25. As far as I knew 15 and 20 profiles didn't exist. So any 20" tyres are going to be bigger than the 14s. If you have incredibly small profile tyres over there, then fair enough. Give me a link as I can't find any.

I'm still waiting for the link almightybmw.

I just found a link to the Khumo tyre mentioned above. 15 series tyres didn't exist until the start of this month and there's only one size now. So that proves I was right in that you aren't going to get a 20" tyre to match the size of that 14" tyre. So before you try and make someone look stupid, wind your neck in and at least know what you're talking about. I can invent a tyre size to match that 14 to use as an example, but it doesn't mean it exists.

Sema: Kumho Launches Ultra-Low-Profile 15-Series Tires

KUMHO LAUNCHES WORLD’S FIRST 15 SERIES TYRE

Ever the innovator, Kumho is launching the world’s first ultra low profile 15 Series tyre at the 2008 SEMA (Speciality Equipment Market Association) Show in Las Vegas this week (November 4-7).

[almightybmw]

Good god man, have you nothing better to do than troll?

[shanksyamaha]

I raced banshees and sleds for years and I know for sure there is a noticable difference between different weight tires. Not sure how size effects its but weight definately does. I would put tires on the back of my banshee that were less than one pound heavier than the ones that were installed and the machine could no longer pull 6th gear. Im sure this translates to mpg Im just not sure exactly how much. I usually try to find the lightest tires possible weather its on my metro or my rhino or my van....

rotating mass matters most...

[Johnny Mullet]

I recently replaced my P155/80R13 tires with P175/70R13 tires on my Metro. I have not ran enough tanks to notice the MPG changes and all the snow and cold weather does not help when trying to get an accurate reading. I will have to say that the wider tires are heavier than the old tires.

[Fast Guy]

Originally Posted by almightybmw

Good god man, have you nothing better to do than troll?

You're the one that was trolling - posting hypothetical rubbish then trying to make someone look stupid because of said rubbish and refusing to give any proof that said crap even exists. Probably because it doesn't.
If you want to try and take the micky out of someone, go back to the school playground and do it. I'm guessing you're not much older than that. I'm sure people on here want valid answers to questions not your rubbish, so why waste their time posting it?

[Z man]

Weight, width, rolling resistance, wheel aero - are all important for mpg, but looks may be more important!

[MetroMPG]

Originally Posted by Fast Guy

You're the one that was trolling

GUYS, take it down a notch, please.

If you need to bicker, use private messaging.

[wagonman76]

Kinda makes me wonder what I could get with the Celeb. When I bought it in 2003, it had the light duty brakes, and lightweight wheels with spoked hubcaps. I had access to a free parts car, so I swapped it to HD brakes and the Euro steel wheels which are very heavy, along with 6000 STE rear disc brakes. The HD driveaxles, wheel bearings, calipers, and rotors all weighed noticeably more. It does stop a heck of a lot better though.

[catmwarrior]

I know for my 1986 Jeep, the studded winter tires weigh in at 37lbs each and I get 20-22 miles to the gallon (in the winter). My summer tires weigh in at 28lbs each and I average 26+ miles to the gallon with them. The warmer temps and type of rubber/tread design also play a role but I do not know the math behind it all. I bought my summer tires and rims from tire rack because I could look up the weight of the rim and tire before I bought them.

[Frank Lee]

Temps play too big a role to make that connection.