Tire pressure
1 - 20 of 32 Posts
29 psi. You will likely get 10 different answers from 10 owners, as everyone seems to have their own theory on "correct" tire pressure. For general commuting on this bike, follow the 29 psi recommendation in the manual. If you are taking the bike out for aggressive riding, drop the tire pressure a few psi to increase the side grip area when leaning the bike hard.
Joined
·
168 Posts
Ditto....35 for extended highway runs too. The less friction the better!
- 2004 Honda 919
- 1978 Triumph Tiger 750
- 1989 Honda GL15 ( A work in progress...Almost done!!!)
- 2014 Honda Grom
Joined
·
147 Posts
I always thought psi kinda includes how much weight you're putting on the tyres...mine is 30 but I weigh 110, yours might be different. It's 30 only because I have to break out each manual for each bike and it drives me crazy so I put 30 in all of them...
Joined
·
1,637 Posts
I've never heard this.
Joined
·
2,923 Posts
- 40-45 most of the time
- 30-35 If I know I'm going to be making turns
Where do you find this information, Pigman?
Joined
·
931 Posts
Never owned a liter bike (Not if all sport bikes are the same as I have onlyou owned 1000's) or adventure bike I take it? My liter bike had two different pressures. 36 for rear single riding and 42 rear for two up. My vstrom is the same also changes if the bike is loaded up with saddle bags and such.
Joined
·
1,637 Posts
Joined
·
931 Posts
Doesn't really apply to the grom. The grom is too light weight with decently wide tires. You look at how much you load down an adventure bike with saddle bags and gear it makes sense. That stock say 36psi may now be squished down and unsafe in corners. Adding a few pounds up to 42 psi will get the tire up where it needs to be while still having a good contact patch. I have felt my bike loaded down a little with stock psi and the rear tire feels unsafe and squishy in the corners.
No cars payload isn't much to need a change in pressure. Look at semi's some run over 100psi in each tire.
No cars payload isn't much to need a change in pressure. Look at semi's some run over 100psi in each tire.
Joined
·
869 Posts
From the manufacturer of the tire. At the track we consult the vendor and or a chart like this... usually on line
http://www.dunlopracing.com/Pressures.pdf
Thanks for the response. I got a set of city grips and the rear tire after 3k miles is pretty badly cupped. Basically #1 cause of that is under inflation. I always keep it at 29psi. I'm wondering if that tire should be at a higher pressure than stock recommended.
It will depend on the load, and how you ride it.
The bike is 100kg plus rider and maybe a passenger
So 170 to 230 kg in total (call it 200kg)
The front and rear tyre share 100kg of the load per tyre, so going to the shops is no problem.
Now do a few wheelies and stoppies, and each tyre is taking 200kg each for a short moment in time.
Ride flat out all day at 60mph with a passenger, and the rear will be struggling to take the near quarter of a tonne of load.
On bigger bikes, I normally have my front tyre standard, and the rear up by 5 to 6psi to compensate for being 2-up and for all day motorway driving.
I ride the grom slow and easy - so it doesn't seem to matter what the pressures are, 30psi is OK.
If I went nuts doing stunts, the rear would be up to 36-ish.
If I went nuts on a long road trip with a passenger (or holiday luggage), the rear would be up to the maximum psi to prevent overheating.
The bike is 100kg plus rider and maybe a passenger
So 170 to 230 kg in total (call it 200kg)
The front and rear tyre share 100kg of the load per tyre, so going to the shops is no problem.
Now do a few wheelies and stoppies, and each tyre is taking 200kg each for a short moment in time.
Ride flat out all day at 60mph with a passenger, and the rear will be struggling to take the near quarter of a tonne of load.
On bigger bikes, I normally have my front tyre standard, and the rear up by 5 to 6psi to compensate for being 2-up and for all day motorway driving.
I ride the grom slow and easy - so it doesn't seem to matter what the pressures are, 30psi is OK.
If I went nuts doing stunts, the rear would be up to 36-ish.
If I went nuts on a long road trip with a passenger (or holiday luggage), the rear would be up to the maximum psi to prevent overheating.
Joined
·
63 Posts
This isn't true, you can't say the Grom is too light to be affected by different tire pressures.
Even bicycles you can notice a huge difference in as little as 10 psi, one of those new fat tired mountain bikes you can probably feel 2-3 psi differences no problem.
Also, I can surely tell the difference in car tire PSI. Heavier cars need more PSI to keep the side walls from rolling if your corning hard. Also depends on your driven wheels with a car.
Another thing to note, you need to consider tire volume. 30 psi does not equal 30 psi if the volumes are different. The more volume the tire, the less PSI required to equal a certain level of hardness. There's just so many factors that go into correct PSI for a bike.
Joined
·
8,369 Posts
Front and Rear at 32psi for me and that is plenty enough to get you sliding on a good sweeper if you are not careful. This psi helps me out with mpg on the open road with my body wt at 210 lbs
1 - 20 of 32 Posts
