Sign In Join 



Honda Civic Real World MPG

2058 messages,  Last post on Aug 26, 2009 at 6:19 PM

You are in the Honda Civic Forum. Your Hosts are pat & karens

What is this discussion about? Honda Civic, Fuel Efficiency (MPG)


Messages Page 189 of 206
1
...
186
187
188
189
190
191
192
...
206
Prev
Next
Last
Go To Msg #
Search This Discussion

#1878 of 2058
Re: MPG LOSS [ruking1] by cjhepburn
Nov 12, 2008 (7:16 am)
Reply

Replying to: ruking1 (Nov 06, 2008 8:32 am)

That sounds like the loss is just the calculated MPG from the tire getting slightly larger. The actual MPG is probably very close to what you had before the new set of tires.
#1879 of 2058
Re: MPG LOSS [cjhepburn] by ruking1
Nov 12, 2008 (8:40 am)
Reply

Replying to: cjhepburn (Nov 12, 2008 7:16 am)

On a practical level there is a portion yes...BUT mostly NO! The actual mileage was the one that was actually posted.
 
So for example in no particular order and no particular % measurements( other than the gross mpg measure)
 
1. yes the tires are larger aka (new) 10/32 vs (old) 3/32 or 7/32 MORE (could have run least 1/32 in more or 10,614 miles .
2. (the past 2) alignments had no measurable effect on mpg. May it have affected these new tires?... maybe......
3. the car on the old oem tires were run up to 90 mph
4. in contrast, break in protocols were followed for the new rubber (NTE 60 mph for 300 miles, nte 65 mpg for another 200 (for 500 miles)
5. no hard braking (we hardly use the brakes and do not brake hard normally except for emergencies- no emergencies)
6. other than a 100 mile initial "bed in", test drive (less than 60 mph) the vehicle was put into the normal plain jane 2 person daily commute.
7. I will do one deviation to get back on round numbers (aka 10,000 mile rotation intervals) and that is to rotate 5700 miles to get back on the 10,000 miles round numbers rotation.
8. I do have the figures when the old oem tires were new, BUT I was totally into the engine (break in oil, etc.,) and suspension, brakes, etc., break in period. But do not have any idea (again) what %'s go to each factor.
#1880 of 2058
Re: MPG LOSS [cjhepburn] by kipk
Nov 13, 2008 (4:59 am)
Reply

Replying to: cjhepburn (Nov 12, 2008 7:16 am)

"That sounds like the loss is just the calculated MPG from the tire getting slightly larger. The actual MPG is probably very close to what you had before the new set of tires."
 
I agree new thicker tread will affect "Calculated" mileage. How much is hard to say.
 
The new and slightly larger diameter tire, due to new tread and sidewalls, will need to rotate fewer times to go a given distance. The odometer is reading something that is rotating.
 
It doesn't see as many rotations with the new tires as with the old ones. Therefore it doesn't register as many miles with the new tires, although they went just as far.
 
Another consideration would be the weight of the old vs new. Heavier tires/wheels are harder to turn and burn more fuel.
 
So, "REAL WORLD" , is the odometer more accurate with old tires or new tires?
 
Kip
#1881 of 2058
Re: MPG LOSS [kipk] by ruking1
Nov 13, 2008 (7:20 am)
Reply

Replying to: kipk (Nov 13, 2008 4:59 am)

The 2nd tank fill up micro'd out to 37 mpg. Again, it is within the predicted (loss-1/2 mpg) range. (38-42 range)
 
..."So, "REAL WORLD" , is the odometer more accurate with old tires or new tires?"...
 
Given the last two tank fill ups, I would say the odometer is accurate with old tires and new tires!
 
I am no expert with weights and measures compliance, but I am sure one's local DMV web site will have something to say about the issue/topic.
#1882 of 2058
Civic 04 mpg reports by ruking1
Nov 13, 2008 (11:09 am)
Reply
link title
 
Above is a link to the gov fuel economy
 
04 Honda Civic (7 vehicles)
 
AVG: 32..4 mpg
 
Range: 28-37 mpg
#1883 of 2058
Re: Civic 04 mpg reports [ruking1] by ruking1
Nov 14, 2008 (11:11 am)
Reply

Replying to: ruking1 (Nov 13, 2008 11:09 am)

The survey linked in msg #1416 has way more of a population and better detail, even as most folks would tend to give greater credibility to a (dot). GOV web site. Far and away the majority (21.39% of 228/1066 sample) report between 27-30 mpg
#1884 of 2058
Re: Civic 04 mpg reports [ruking1] by kenlw
Nov 14, 2008 (12:34 pm)
Reply

Replying to: ruking1 (Nov 13, 2008 11:09 am)

7 vehicles?
 
this is not in any way, shape or form a significant enough population from which to draw any conclusions whatsoever. The variance in the range alone is >30%, that is a red flag in anyone's book that the trial population is inadequate for anything other than to determine gross anomalies.
#1885 of 2058
Civic 08 AT sedan by cuyseco
Nov 15, 2008 (9:27 am)
Reply
I bought my Civic 08 last september. I am getting 34 MPG..Is that ok?? Will it improve later??
  
Thanks
#1886 of 2058
Re: Civic 04 mpg reports [kenlw] by ruking1
Nov 15, 2008 (10:19 am)
Reply

Replying to: kenlw (Nov 14, 2008 12:34 pm)

According to the odometer, we have put on app 1000 miles on the Civic's "new" tires. Seeming the alignment shows no weird wear. We were able to keep the first 300 miles under 60 mph, and the second 200 miles under 65 mph. In my mind, we are cleared up to normal speeds. I will report the 3rd tank full mpg (so far 38.5, 37 mpg) . Two deviations from the original tires: 1. UTOQ ratings from 320 to 700. 2. R rating to T rating. The other drivers have notice NO differences but they are used to paying absolutely NO attention to these things. I like the way it feels. So now we have 73,300 miles to see if the new ones will last as long as the "old tires". The swag is at least 150,000 miles, but I'd be happy with 120,000 miles. Hopefully by then newer latest and greatest tires will make its mark on www.tirerack.com.
#1887 of 2058
Absolutely off topic but....unexpected consequences.... by ruking1
Nov 16, 2008 (11:11 am)
Reply
In the process of checking and writing about mpg after tire changing, I discovered that after 4 years and 7 mos, the passenger side windshield wiper blade needs changing due to the beginnings of a wiper blade tear.

Messages Page 189 of 206
1
...
186
187
188
189
190
191
192
...
206
Prev
Next
Last
Go To Msg #
Search This Discussion
To POST a message, please Sign In.

New? Join Now!

Forum Tools

Please sign in.
Email Address:

Password:

Forgot Password?

Search Forums

Enter Keyword(s)

Advanced Search

Browse by Vehicle



View All Vehicles
Advertisement
Ask the Community
See What People Are Asking

Browse by Board

Browse by Topic


View All Topics

Today's Chats

Advertisement