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PT Cruiser Tires and Wheels



  • capriracercapriracer Somewhere in the USPosts: 874
    On every vehicle sold in the US – and I am told this is worldwide, but I have not been able to verify this - there is a sticker – commonly called the tire placard - that lists the original tire size and the proper pressure for that size. The placard is usually located on a doorpost or in the glove box – but sometimes it is located in the trunk or on the fuel filler door.

    BTW, it doesn't matter who makes the tire or what pressure is listed on the tire's sidewall, if the tire size is the same as the placard, then the pressure listed on placard is also appropriate.

    Having said that, there are folks who think a few psi more helps - in that it decreases the amount of heat that the tire generates during operation. Heat is the tire killer, so they have na point, but I wouldn't use more than 5 psi above the placard pressure or your handling may change drastically.
  • pewartpewart Posts: 6
    Hello There, I tend to disagree with the rating for tyre press given from door posts and generic data. Studying automotive engineering back in the day we were taught to look out for signs of incorrect pressure such as excessive wear on outer edges or excessive wear on centre of tyre. Outer edge wear (providing alignment is good) is typically sign of under inflation while high wear in tyre centre is sign of over inflation. I have tested this theory over the years and found that while inflation as little as 2psi under manufacturers rating will definately wear outer edges you can inflate more than 10psi above the rating and be lucky to get centre wear. That being said I run my tyres about 8psi above over stated most year round but tend to lower to 4psi over when excessive wet to give more traction.
    If you have ABS over inflation by these amounts should not be issue but driver style will make some difference. As for temperature try a nitrogen fill to reduce temp due to reduced flex in side wall.
  • capriracercapriracer Somewhere in the USPosts: 874
    While we can argue about the suitablility of what is listed on the vehicle tire placard, it is clear that the vehicle manufacturer specified that pressure and that there are things beyond tire wear that need to be considered when critiquing that value. However, over-inflating the tire a little is probably not going to harm anything - the operative word being "a little".

    But there is one part of the post that I want to take issue with:

    ".....As for temperature try a nitrogen fill to reduce temp due to reduced flex in side wall....."

    Sorry, but all gases behave very smilarly and there have been many studies that prove that nitrogen inflation does not change the heat buildup characteristics of a tire. The myth that there is a difference is all advertising hype.
  • pewartpewart Posts: 6
    I came to add my opinions not argue, note the word 'try' and 'manufacturers' spec as for 'spin' molecular size is a real fact and scientifically proven and flex in tyre walls adds to heat build up so naturally hardening up the tyre will decrease this.
    A lot of advertisers in the US should be shaken up but I have an open mind as to what other 'perhaps experienced people are saying has worked for them I make the effort to understand there is more than one perspective so take issue with a perceived lack of temperament and shoot the messenger!!
  • Hi, I have owned an 02 and an 07 PT Cruisers. no air problems. I have managed a tire store and have seen the welds break in the center of the wheels and leak.( I had a 99 Taurus that did this) also on newly installed tires, the tire bead may not seat( seal to the wheel) properly and leaks at the bead.( wheel edge that meets the tire) sometimes the tire valve center becomes loose and leaks air.
    hope this helps.
  • dfanjoydfanjoy Posts: 1

    I bought a 2003 PT Cruiser Dream2, with the 17" Chrome wheels and it has been nothing but a complete nightmare!!! I was spending a fortune in quarters putting air in my tires a couple times a week! I bought a tire pump for $80 that plugs into the Cig lighter and was saving me money but one tire I had to put air in every morning before I went to work, It was driving me insane!! I took it too my machanic and just from using the machine to take off the tire a 14" piece of chrome broke off, he did his best to grind it smooth and I'm still to this day putting air in my tires 2 to 3 time a week!!! What a pain!!! Chrysler should be replacing these wheels for us.. All of this just to save a penny!! I want to use my PT for a few more years so when I get my bonus from work I'm going to purchase 4 new alloy wheels. Does anybody know the offset for the original 17" chrome wheels? I can't seem to find it anywhere, the offset for the ones I want to get are 35mm. I was able to find out that the original wheel size is 17x6 and the ones I want to get are 17x7.5 35mm will this still work? I've been using the Humho Solus KH16 205/50R17 tires for years purchased from Tirerack. It just seems so rediculous to have to buy new wheels, I never had to do that with any other vehicle I owned. And they don't make it easy trying to find out the information on the wheels either.

  • mom4kids4catsmom4kids4cats MichiganPosts: 1
    Same tire problems, slow leak and rim pitting along with the shimmy. I have the 2003 turbo. Can I switch out the rims and tires from a non-turbo PT cruiser? Does this cause any problems?
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