#19927, "RE: 225 40 18 air pressure" In response to Reply # 0
32-40psi is a decent range to stay in
Bill
You can have it cheap, fast or good. Pick any two.
If you want it cheap and fast, it's not going to be good. If you want it cheap and good, it's not going to be fast. If you want it good and fast, it's not going to be cheap.
#19950, "RE: 225 40 18 air pressure" In response to Reply # 5
alot depends on the max of the tire..
what your suspension and roads are like more pressure for bad roads to keep from bending wheels less presure on smooth roads.. too much pressure can make your tires bloat and be unstable and explode...
i wouldn't wanna see anything above 45psi ever... (ona under 50seris tire) Bill
You can have it cheap, fast or good. Pick any two.
If you want it cheap and fast, it's not going to be good. If you want it cheap and good, it's not going to be fast. If you want it good and fast, it's not going to be cheap.
#20007, "RE: 225 40 18 air pressure" In response to Reply # 8
I go by what the door says plus like 1-2 psi. so 33-34 psi in teh front and 30-31 psi in teh back. No problems with anything, but I also have 235/40/18 tires so I have a little more room in there
#20030, "RE: 225 40 18 air pressure" In response to Reply # 9 Sep-19-03 05:11 PM by Ryan_Hes
I run 32psi in the front and 36psi in the rear. Also, I dont think it matters how large the tire is, or how much 'room' you have - 35psi will be 35psi wether its in a car tire or a minivan tire. The only reason higher psi would be necessary in larger vehicles is purely because of the weight... I assume that a 225/40 tire with 35psi is equally as inflated as a 235/40 or a 205/55 -- after all, it's not the amount of air in the tire, its the pressure of the air in the tire...
#20043, "RE: 225 40 18 air pressure" In response to Reply # 10
Ryan - what you're saying makes sense. I work with bicycles everyday, and I was trying to apply your view to bicycle tires. I put 45lbs of air into a mountain bike tire (wide tread, tall sidewall), and the tire is pretty frickin hard. Then I put the same 45 lbs of air into a road bike tire (narrow tread, thin sidewall), and that tire is almost flat. Mountain bikes usually take between 35-45 lbs of pressure, whereas a road bike takes between 95-120 lbs. I know that comparing bikes to cars is like apples and oranges, but it would be interesting to know if maybe there is anything in common between the two comparisons. Comments, anyone??
#20050, "RE: 225 40 18 air pressure" In response to Reply # 12
u want more air pressure ina thinner side wall to keep from hurting your wheels and more air pressure provides a stiffer tire for corners, as long as u dont bloat the tire and make a flat tire round...
Bill
You can have it cheap, fast or good. Pick any two.
If you want it cheap and fast, it's not going to be good. If you want it cheap and good, it's not going to be fast. If you want it good and fast, it's not going to be cheap.
#20078, "RE: 225 40 18 air pressure" In response to Reply # 13
there's alot of things to factor into tire pressure. there's a book that has all the information printed out for you. most good shops will have one. tirerack might even sell it. i forget what it's called but the sales people always check it when one of us gets confused.
for this size i'd say no less then 35. the only exception to the rule that i can think of is yokohama parada's. they say 35psi max. unless the tire says otherwise you shoul dreally run between 35-42.
