Effect of Tyres on Fuel Consumption

[buddah51au]

We all learn something new every day. For those of you that have followed my previous posts on fuel consumption you will know that i keep a spreadsheet on all fuel used and therefore can give exact consumption figures. Several weeks ago i had to replace tyres @ 53181kms which i considered good milage from a FWD vehicle. I therefore decided to replace them with the same brand (Michelin Pilot Preceda - 205/55x16). The new updated Michelin has a slightly more open & aggressive tread pattern. I immediately noticed a very slight increase in Fuel consumption, but wanted to do some calculations after several weeks to gain accurate figures. My findings are as follows:-

From 20,145kms to 53,179kms I used 2133.52 liters @ an average of 6.458l/100
From 53,179kms to 58,475kms I used 365.34 liters @ an average of 6.9 l/100

While this is still excellent economy, It shows different tyre compounds/tread patterns can have a slight effect on fuel consumption. Note that this comparison is done with exactly the same driving conditions and on the same roads, so it is a fair and exact comparison. I

I am not complaining at all, I was just unaware that tyres could make a difference to economy.

[markCivicVti]

Still jealous of your fuel economy. I pretty much do 10L/100km as I fill up 40 litres for having done around 400km.

Higher temperature in the last several weeks could also play a role in the risen fuel consumption. By the way hope you recovered quick smart after that accident you shared with us a while ago. I take it that you decided on keeping the civic after it got pushed back against the gearing.

[buddah51au]

Such is life for city drivers Mark.....lol....My spreadsheet shows no such effect in previous summers.

As for recovery proccess....still goin to physio twice a week, prescription dope is on the daily menu, going to see a specialist in Bris next month.

I did keep it even though i was offered an unbelievable deal at the time on a new euro, but the mrs wouldn't play ball. Have done an additional 18,000km since the incident & no probs with the Auto. I talked a relative into buying a new CU2 euro and he gave it to me for a week to do an economy run, hard to be specific over 1 tank but result was 7.3/100

[bodaas]

as far as i know, i watched from current affair before
they said if you drive your car with flat tyres or low air tyre pressure
increase fuel consumption.. simple as that,

[buddah51au]

i have increased from 34 to 36 psi to see if it helped......low tyre pressure is not a possibility

[AE092]

kmon seriously, your using 1/2 litre more fuel consumption

Have you seen the price of petrol lately, it's probably saving you 50c.

[buddah51au]

As i said, i am not complaining......i only posted because several people are interested in my results.