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Posts Made By:
CapriRacer
Forum:
EcoModding Central
01-11-2024, 08:27 AM
Replies:
12
Wintertime tire pressure?
Views:
556
Posted By
CapriRacer
There's 2 schools of thought: 1) To...
There's 2 schools of thought:
1) To maximize the grip in snow, you want the largest footprint possible - and that means low pressures.
2) You want to penetrate through the snow to get down to...
Forum:
Aerodynamics
11-07-2023, 08:17 AM
Replies:
111
50% of your EV energy consumption comes from wheels and tires
Views:
5,861
Posted By
CapriRacer
The problem here is that tire size doesn't have...
The problem here is that tire size doesn't have as much effect as the tread rubber does.
Put another way, the variation between tires of the same size is way, way bigger than the difference...
Forum:
EcoModding Central
10-15-2023, 02:37 PM
Replies:
10
How to Determine Most Efficient Tire
Views:
717
Posted By
CapriRacer
Jeff, Here's a link to an earlier discussion...
Jeff,
Here's a link to an earlier discussion I started concerning RR regulations.
Ecomodder.com:
Tire Fuel Efficiency Consumer Information thread...
Forum:
Aerodynamics
10-13-2023, 02:49 PM
Replies:
111
50% of your EV energy consumption comes from wheels and tires
Views:
5,861
Posted By
CapriRacer
Doesn't twisting the tire - tread vs rim -...
Doesn't twisting the tire - tread vs rim - effectively shorten the sidewall height? And isn't that why the sidewall buckles?
Forum:
Aerodynamics
10-08-2023, 07:10 AM
Replies:
111
50% of your EV energy consumption comes from wheels and tires
Views:
5,861
Posted By
CapriRacer
http://barrystiretech.com/rrvsspeed.png ...
http://barrystiretech.com/rrvsspeed.png
http://barrystiretech.com/truckrrvsspeed.gif
The explanation for the increase in RR vs speed is that a rolling tire generates a standing wave in the tire...
Forum:
Aerodynamics
10-06-2023, 07:50 AM
Replies:
111
50% of your EV energy consumption comes from wheels and tires
Views:
5,861
Posted By
CapriRacer
To completer this picture we need to know what...
To completer this picture we need to know
what affect inflation pressure has on both traction and wear.
Further, that graph is for a particular tire under a certain load. When tires are...
Forum:
EcoModding Central
05-19-2023, 09:00 AM
Replies:
12
Tire Rolling Resistance Increases as the temperature drops!
Views:
846
Posted By
CapriRacer
That graph is lifted directly from this paper: ...
That graph is lifted directly from this paper:
https://azb4fstg-cdn-endpoint.azureedge.net/mediacontainer/medialibraries/smithersb4f/resources/2023/smithers_effect_of_temp_01102023v2.pdf?ext=.pdf...
Forum:
EcoModding Central
05-17-2023, 04:13 PM
Replies:
12
Tire Rolling Resistance Increases as the temperature drops!
Views:
846
Posted By
CapriRacer
No. Here's the data: ...
No. Here's the data:
http://barrystiretech.com/RRvsTemp.jpg
http://barrystiretech.com/RRvsTemp.jpg
Forum:
EcoModding Central
05-17-2023, 01:08 PM
Replies:
12
Tire Rolling Resistance Increases as the temperature drops!
Views:
846
Posted By
CapriRacer
Tire Rolling Resistance Increases as the temperature drops!
From Tire Business May 8, 2023
How does temperature affect rolling resistance?
By Erin Pustay Beaven
GREENVILLE, S.C.
Range can be a very tricky thing. Electric vehicle range is, simply,...
Forum:
EcoModding Central
03-04-2023, 07:12 AM
Replies:
9
Optimizing tire size for light truck. 70/30 city/highway driving
Views:
723
Posted By
CapriRacer
Stay away from LT tires (LT tires come in Load...
Stay away from LT tires (LT tires come in Load Ranges = Ply Ratings). That's the wrong way to go for rolling resistance. LT tires are designed more for load carrying capacity than fuel economy. ...
Forum:
EcoModding Central
02-03-2023, 08:24 AM
Replies:
37
Tire Fuel Effeciency Consumer Information
Views:
4,355
Posted By
CapriRacer
Update: On Feb 14, 2023, the California Energy...
Update: On Feb 14, 2023, the California Energy Commission will present its proposal on tire rolling resistance:
...
Forum:
General Efficiency Discussion
12-07-2022, 09:07 AM
Replies:
1
Tire Truing
Views:
524
Posted By
CapriRacer
Tire truing is shaving off the high points of the...
Tire truing is shaving off the high points of the tire runout so the tire is dimensionally round. That used to be a common fix for tire vibrations that weren't fixed by balance. There's a reason...
Forum:
General Efficiency Discussion
10-01-2022, 08:15 AM
Replies:
15
Efficient alignment
Views:
1,291
Posted By
CapriRacer
They do that so that the footprint of the front...
They do that so that the footprint of the front tires is small and can fit in a furrow. The alternative is to space out the front axle so each is in its own furrow.
Forum:
General Efficiency Discussion
09-30-2022, 10:06 AM
Replies:
15
Efficient alignment
Views:
1,291
Posted By
CapriRacer
Toe in is stable, toe out is unstable (the...
Toe in is stable, toe out is unstable (the vehicle can't figure out which side to follow).
On solid rear axles, toe isn't a problem because it is very close to zero.
Camber tends to cause good...
Forum:
EcoModding Central
09-12-2022, 04:35 AM
Replies:
8
Tire recommendations for Nissan Frontier
Views:
1,284
Posted By
CapriRacer
Tire Rack changed the way they designation LRR...
Tire Rack changed the way they designation LRR tires. They use "Eco Focus", which implies a bit more than just better RR. The words after "Eco Focus" is the name the tire manufacturer uses to...
Forum:
General Efficiency Discussion
08-25-2022, 08:03 AM
Replies:
6
Sixty peer-reviewed research essays retracted
Views:
1,677
Posted By
CapriRacer
Spam, spam, spam, spam.
Spam, spam, spam, spam.
Forum:
The Lounge
08-16-2022, 07:40 AM
Replies:
15
Radial versus bias ply on Teardrop trailer?
Views:
1,033
Posted By
CapriRacer
Ah ...... Mmmmm ...... Not exactly. I think...
Ah ...... Mmmmm ...... Not exactly.
I think you are confusing ST tires compared to regular car tires. ST tires carry more load because of the higher inflation pressures. But ST tires come in...
Forum:
EcoModding Central
07-22-2022, 07:54 AM
Replies:
20
Tire question
Views:
1,658
Posted By
CapriRacer
You can verify that they are the factory tire by...
You can verify that they are the factory tire by looking for the TPC code required by GM on all tires supplied to them.
If they are OE, then the only valid review is going to be from folks who got...
Forum:
EcoModding Central
02-15-2022, 07:39 AM
Replies:
37
Tire Fuel Effeciency Consumer Information
Views:
4,355
Posted By
CapriRacer
Update: There is a January 2022 report on...
Update: There is a January 2022 report on rulemaking out of the US Federal government - US DOT. This is the first update since Aug 2019.
The report says that there will be a rule published Sep...
Forum:
Hypermiling / EcoDriver's Ed
05-15-2021, 08:05 AM
Replies:
276
Hyperinflating tires
Views:
83,831
Posted By
CapriRacer
No, it doesn't make sense to replace one tire -...
No, it doesn't make sense to replace one tire - especially if you've had no problems since it was patched.
Forum:
EcoModding Central
03-31-2021, 06:49 AM
Replies:
22
Poll:
What tires do you have & how would you rate their RR, treadwear & traction?
Views:
2,557
Posted By
CapriRacer
Snow traction is mostly about tread pattern -...
Snow traction is mostly about tread pattern - especially edges. It's always been possible to make a tire with good snow traction that could be used year round, but those types of patterns sacrifice...
Forum:
EcoModding Central
02-25-2021, 08:09 AM
Replies:
7
tire size fuel efficency 165/60/r14 , 165/80/r14, 155/80r14
Views:
814
Posted By
CapriRacer
The difference between tires in different sizes -...
The difference between tires in different sizes - all other things being equal - is small compared to the differences between make and models (up to 60%)
So you should concentrate on the make and...
Forum:
EcoModding Central
02-23-2021, 08:08 AM
Replies:
9
LRR vs. Weight
Views:
1,077
Posted By
CapriRacer
I am going to make the assumption that Alexshock...
I am going to make the assumption that Alexshock (OP) hasn't read the 2 web pages I pointed out - and that's why he hasn't posted back. But I am going to continue the conversation anyway.
First,...
Forum:
EcoModding Central
02-22-2021, 08:01 AM
Replies:
9
LRR vs. Weight
Views:
1,077
Posted By
CapriRacer
Read my webpage on the subject of fuel economy...
Read my webpage on the subject of fuel economy and tires: Barry's Tire Tech (http://barrystiretech.com/rrandfe.html)
and: Barry's Tire Tech (http://barrystiretech.com/rrandfe2.html)
Then post...
Forum:
General Efficiency Discussion
02-11-2021, 08:21 AM
Replies:
9
Tires make a BIG difference!
Views:
1,137
Posted By
CapriRacer
Don't you just hate it when someone says the same...
Don't you just hate it when someone says the same thing you were going to say? Especially when they use your own quotes!
Showing results 1 to 25 of 237
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