Tire Pressure - Kia Niro Forum
 3Likes
Reply
 
LinkBack Thread Tools
post #1 of 43 (permalink) Old 08-16-2017, 01:30 PM Thread Starter
Junior Member
 
Join Date: Aug 2017
Posts: 25
Tire Pressure

For those getting 50+ mpg. What are your tire pressures at?

2017 Niro EX w/Tech Pkg


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
NixonNiro is offline  
Sponsored Links
Advertisement
 
post #2 of 43 (permalink) Old 09-08-2017, 10:04 PM
Senior Member
 
Join Date: Mar 2017
Posts: 214
NixonNero- I keep my tire pressures to the recommended 36PSI. I check them on the dash indicator. They do vary a bit, so if I notice two of them have dropped below 36, after the pressure registers, when still fairly cold, I check manually. I have had to add about 1-2 PSI once since new. In the owners manual it says "it is permissable to add 3PSI to standard pressure if colder temps are expected soon. Tire pressures typically lose 1PSI for every 12F temp drop." So I plan to add pressure in winter.
Manual also says: add'ly req'd tire pressure per km above sea level:1.5psi/km.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
realto is online now  
post #3 of 43 (permalink) Old 09-10-2017, 10:06 AM
Senior Member
 
Join Date: Aug 2017
Posts: 333
Based on my 4 years hybrid experience, the more pressure you can run in your tires, the better your mileage will be. My Fusion was in its sweet spot at 44 psi. I haven't started to mess with my Niro tires yet. Some people run as much as 50 psi but that seems to be a bit high to me. They say it still drives OK, though.
Griswald is online now  
post #4 of 43 (permalink) Old 09-16-2017, 02:49 PM
Senior Member
 
Join Date: Mar 2017
Posts: 214
Quote:
Originally Posted by Griswald View Post
Based on my 4 years hybrid experience, the more pressure you can run in your tires, the better your mileage will be. My Fusion was in its sweet spot at 44 psi. I haven't started to mess with my Niro tires yet. Some people run as much as 50 psi but that seems to be a bit high to me. They say it still drives OK, though.
Griswald- I wouldn't run that much air, personally. That is harder on the suspension, the people that build the car figure those pressures, and of course they want to go as high as reasonanble for better gas mileage. IMO a couple psi over is OK, but running that much air is harder on the suspension, ride, and handling.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
realto is online now  
post #5 of 43 (permalink) Old 09-18-2017, 08:00 AM
Senior Member
 
Join Date: Aug 2017
Posts: 333
Quote:
Originally Posted by realto View Post
Griswald- I wouldn't run that much air, personally. That is harder on the suspension, the people that build the car figure those pressures, and of course they want to go as high as reasonanble for better gas mileage. IMO a couple psi over is OK, but running that much air is harder on the suspension, ride, and handling.
Until you've tried it, how do you know how it affects the car? In the Fusion, I couldn't tell any difference until I hit 45 psi. It rode and drove exactly the same except for rising MPG numbers.

Set mine up to 42 psi yesterday and will report back after a few drives.
Griswald is online now  
post #6 of 43 (permalink) Old 09-19-2017, 06:35 PM
Junior Member
 
Join Date: Jun 2017
Posts: 8
I have an SX Touring. Here in Canada we have no tire monitoring so I do it myself. The car came with nitrogen in the tires set at 36 lbs I checked recently,still at 36lb.

My 1990 Miata runs at the recommended 26lb. 44 lbs when slaloming.

I don't intend to slalom the Niro. It does very well in the twistys at 36lb.

Cdn Ocean Blue is offline  
post #7 of 43 (permalink) Old 09-21-2017, 12:33 PM
Senior Member
 
Join Date: Mar 2017
Posts: 214
Quote:
Originally Posted by Griswald View Post
Until you've tried it, how do you know how it affects the car? In the Fusion, I couldn't tell any difference until I hit 45 psi. It rode and drove exactly the same except for rising MPG numbers.

Set mine up to 42 psi yesterday and will report back after a few drives.
I don't need to try something to know of the effect. If you overinflate tires, you get a smaller tread contact area. Less tread on the road. That affects handling. It increases the wear of the center tread over outside tread- so tires wear out quicker. It makes for a harsher ride, the tire is harder- which transmits to suspension, and more road noise.
After 10 fuel fillups with the proper pressures, I am averaging 55MPG. I am very sastisfied with that. I think if I was zealous enough for a small MPG increase to consider overinflation, I would remove the roof rails first. Per EPA ratings, that would be a 1MPG increase.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by realto; 09-21-2017 at 12:35 PM. Reason: better word choice proper vs.recommended
realto is online now  
post #8 of 43 (permalink) Old 09-21-2017, 04:26 PM
Senior Member
 
Join Date: Aug 2017
Posts: 333
Quote:
Originally Posted by realto View Post
I don't need to try something to know of the effect. If you overinflate tires, you get a smaller tread contact area. Less tread on the road. That affects handling. It increases the wear of the center tread over outside tread- so tires wear out quicker. It makes for a harsher ride, the tire is harder- which transmits to suspension, and more road noise.
After 10 fuel fillups with the proper pressures, I am averaging 55MPG. I am very sastisfied with that. I think if I was zealous enough for a small MPG increase to consider overinflation, I would remove the roof rails first. Per EPA ratings, that would be a 1MPG increase.

Again, you have not tried it. I and 10's of thousands of other hybrid and electric vehicle owners have.

Its not so drastic as you make it sound, were not talking an extra 40 or 50 psi. As long as you do not exceed the maximum number on the tire you wont have any of those issues you suggest WILL happen.
djs likes this.
Griswald is online now  
post #9 of 43 (permalink) Old 09-22-2017, 01:45 PM Thread Starter
Junior Member
 
Join Date: Aug 2017
Posts: 25
On most vehicles the PSI on the car door is different then what the tire says. Car manufacturers use tire inflation as part of their suspension to cushion the ride. Handling isn't affected until you go over the tire psi spec.

On my previous VW Passat it suggested 35psi. I ran 42psi, tire rating was 45psi, and it increased 4mpg.

My diesel truck Chevy recommends 36psi. Tires say 75psi. I run 68 psi. Ride is rougher but wear and handling doesn't change. I put the psi that high for towing trailers and hauling.
kia-val likes this.

2017 Niro EX w/Tech Pkg


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
NixonNiro is offline  
post #10 of 43 (permalink) Old 05-31-2018, 07:57 AM
Junior Member
 
Join Date: May 2018
Posts: 2
41psi
Rasto Sorl is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Flat tire options ColoNiro Wheels, Tires, Brakes, and Suspension 12 11-08-2018 05:58 PM
Has anyone purchased the spare tire kit? deroy39 Kia Niro Owners Registry And Check In Area 51 06-06-2018 05:49 PM
2 time Prius owner interested in Niro plug in jdonalds New Member Introductions 14 08-13-2017 03:49 AM
Swap out wheels on Touring Model thewebgal Kia Niro Dealers, Pricing, Orders And Leases 11 06-27-2017 08:38 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome