I have heard that many people are switching to the nitrogen in tires as it is to improve gas mileage. I know they offered it at the Lexus dealership, but I never took advantage of it.
Of course, the phaeton is not going to get the mpg as an echo or aveo even with the tires, but I am just curious...
Since finding 2 hubcaps "missing", I am wondering if I have options as to the styles of hubcaps? Does a particular style affect fuel efficiency? Will going "capless" improve gas mileage?
View 2 RepliesI just bought a 2002 f150 7700 series and how to improve the gas mileage. i was thinking about putting in a performance chip.
View 11 RepliesI have an '05 F350 single rear-axle w/109k miles. I only recently bought the truck for towing, and haven't had much time to play with it.
It seems that I get about 10-11 mpg on average - I was thinking this was a bit low - anything I can check?
I am normally a pretty quick driver, but, have been taking it easy to get a good read on the mileage, so, the right foot has been "very light".
The truck has a "tick", and I intend on following some of the guides for that, but how to improve the mileage
I've been told that manually unlocking the front hubs on my '15 F350 dually, might just improve milage. Any concerns about the axle lubrication from being unlocked for extended periods of time? I rarely need the 4WD.
View 9 RepliesI have a 2011 Camry LE with about 13,000 miles on it. I just replaced my tires with Bridgestone Turanza EL400 225/65/16 and now my mileage have drastically decreased, I used to get about 400 miles per tank driving strictly city, but now I'm lucky if I can actually reach 300 miles driving under the same condition (non aggressive city driving). Does increasing the width of the tires actually make this big of a difference in mileage?
View 14 RepliesOther than during cold winter weather, our 2+ year old Prius has been averaging 51-56mpg all around. Our tires needed changing and my spouse went to a tire dealer. The dealer recommended Cooper tires, a model supposed to get 50k miles. Almost immediately we now average 45-46mpg.
In looking back, we didn't buy tires that accentuate mpgs. Is there anything we can do short of selling the tires? And are they makes and models we should think about when it's time to change the tires?
The stock 265/75/16 tires need to be replaced and I was considering swapping 285's on the stock wheels. Will I notice an increase in fuel consumption? I realize that calculating mpg will need to be adjusted due to larger tires since the speedometer will be slightly off.
View 14 RepliesThis Easter I put summer tires on my "new" (owned about 4 weeks) prius -07, and cleaned and greased brakes.
With winter tires (almost new Nokia hakka xx, stud less) I got 4.5 l/100km (52mpg) easy and 4.2 (56mpg) at best, now I get 5.5 (42mpg) and 5.3 if I struggle, if I relax and put cruise control on I get 5.8 (40mpg). I travel 100km to work every day.
Summer tires is Michelin primacy (about 2 seasons?) pumped to 3.0/2.8 bar (over inflated).
Brakes don't seem hot after drive and they was really clean and easy to move after my service so my guess is that they work fine...
Mileage went down over the weekend so I see a clear link.
It was more fun trying to hypermile at 56mpg aiming for 60 then it is at 42 aiming for 45...
12v battery charged, just in case. Still same temperature out 1-8 C. Oil and all filters changed first week (will change trans axle oil in summer). Travel to work got 4% shorter so tire size must be a small reason to the +20% problem.
Last October I needed new tires, so I had Michelin Defenders put on my 2011 Three in place of the OEM Firestones. The Michelins perform well and are nice and quiet, but...
My gas mileage (both indicated on the dash and calculated) has dropped by about ten percent. In researching the two brands of tire, I found that the OEM Firestones are rated at 836 revolutions per mile, and the Michelins are 839. I'm wondering if this is the reason for the apparent change in mileage.
just noticed a discrepancy between the door sticker and TPMS readings; 36PSI for the door sticker and 47PSI on the TPMS. A long story short, measured with a gauge and the TPMS readings are accurate sent a message to my dealer because I took delivery of the car 10 days ago, no answer. I understand those tires are filled with Nitrogen, are the original values (47PSI) a requirement for Nitrogen or should I deflate those tires to door stickers values ?
View 4 RepliesNear the speedometer and gauge cluster, I've flipped through the menus using the steering wheel controls and one option I see is speed.
I was under the impression I could see my actual speed digitally displayed. But it seems to show in small print my average speed. Is there a way to make it digitally show my speed?
My 2004 Phaeton has 167,000 KMs on it right now, but the maintenance schedule on the user manual ends at 166,000 KMs, I have checked with the VW dealer, they said once the car goes pass that mileage, you just start over again, treat it like a new car, i wonder if this is true?
View 3 RepliesI am experiencing some noise coming from tires or wheels or both. I had a pair of nexen n3000 that lasted about 30,000 miles.
Last week I replaced them with Hankook Verus V12 255 45 18 that seemed to be a high rated tire by multiple sources. After I had them put on and road force balaced, It seemed like the right rear or passenger tire were making a noise that became pretty loud at 45 miles an hour thru to about 60 and then started to quiet down a little.
I then needed to replace the control arms on the front tires(front and rear; btw I have a great place that will get the parts very cheap if you need the control arms) So I had them replaced, and had the car aligned.
After all of that, I drove the car about 100 miles and it still was making noise. The dealership said the noise wasn't the wheel bearings, and that it was probably the high performance tire I had on it.
So I went to discount tire and they replaced them for me with Continental Extreme contact DWS tires that are rates much better and everyone that has reviewed them says they are quiet and have a good tread wear life.
But I just drove 5 miles on them, and they have the same problem. So either it is a coincidence the both sets of tires are bad. (which is unlikely)
Or: Wheel bearings are worn? Pressure isn't right(i have 38 on the front 35 on the rear)? Or another component I'm not accounting for.
Came out of church this morning to a "Defective Wheel on Board" warning - of course these warnings only happen on weekends or when I am far from home.
From searching the boards and reading the manual, this seems to tell me that I have a tire that is going flat. I checked the air pressure in each of my tires (including the spare). I was down about 2 psi in the right front, but all others were right on. I went to add air to the right front.
I checked the pressures before going out later in the day and they were all still up. While turning in to a parking lot, the "Flat Tyre" warning displayed. I parked the car - nothing looked flat. Checked the pressure in all tires (including the spare) and they were still at the set intervals.
Went to do my shopping and 30 minutes later I was back to the Defective Wheel warning, but not the Flat Tyre warning. Drove home, checked all the pressures - everything still fine.
Just wondering about everyone's experience with this warning. What is the possibility that I have an issue with a monitoring system versus the tire? I bought the Phaeton used at 20k miles and now have 26k total on the odometer.
Does the warning code need reset by a VW tech if I go elsewhere to replace the tires? Although I think given the lack of any apparent issues with the tires, I probably need to take in to the dealer.
Give me 5 mAin tips to improve my poor 40 MPG that im getting from my 2009 prius w only 34k miles on it.
View 9 RepliesI came from driving a 2001 BMW X5 to the 2007 GX470. The handling is so bad. It's so floaty. I do not have KDSS which is probably part of the problem.
View 11 RepliesWhat is the most practical way to improve my headlights? I am constantly over driving my lights on back roads. Can driving lights be easily mounted in the grill?
View 9 RepliesI have an 09 Se with the V6. About 50k miles. When I bought the car at 40k miles, I installed H&R springs and new KYB struts. Also installed the US rear sway bar. Recently put on 18"TRD wheels with brand new Continental extreme grip tires.
At high speeds, 90 - 100+ mph, the car feels a bit soft, and almost a bit squirrelly when maneuvering. What could I do to further stiffen the car?
I've had my XB 5-speed for nearly a year and 10000 miles. It as been dead on reliable and fun to drive. My gas mileage has varied from 26 to 31 in mixed driving and from 32 to 35 on the highway. I use premium fuel only because I can get it without ethanol. My fuel mileage also increased a couple of mpg due to getting the power robbing ethanol out. True it is probably not enough to offset the extra expense but I like not having the stuff in my car. My only dissatisfactions has been with the transmission gear ratios. They are way to low. This torquy engine could easily do with a ratio that would drop about 500 rpm for more relaxed highway cruising.
As it is, though, my XB will go up any hill or long grade without breathing hard! Another is the instrumentation. I don't mind the center mounted set-up but speedometer and trip meter for mpg ratings are both inaccurate. My speedo reads about 2.5 mph high and the fuel mileage read out has about the same error, also on the high side. I have the stock 16" tires. The clutch has a narrow engagement band and can be difficult to be smooth on. The car is fairly quiet, is comfortable and this years hot, humid summer has shown it has one of the best air conditioners I have ever experienced in a car. I thought it might be an electric unit rather than a belt driven compressor because there is absolutely no perceived drag when the compressor kicks on.
I recently purchased a 2010 Toyota Venza. I unfortunately did not test drive it enough to realize how rough a ride it has. Thinking that something was wrong I brought it back and was told that it is normal and the Venza has a very hard ride. After more research I found out that it is a common complaint. The mechanic said that its large 20" tires, long wheel base and tight suspension all add up to a very hard ride. I saw previous discussions regarding this but no real or recent answers. Can anything be done to improve the ride? I was told that the 2013 model has a better ride so they must have changed something. Would something as simple as replacing the shocks with a different type? I love the car but hate the thought of driving it for the next 5 years the way it is. I would have purchased a Ford Edge or similar car if I realized how hard the ride is.
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