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Tyre size question!

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Old 07 Jul 2012, 11:27 am
Fresh Cruiser
Join Date: Jul 2012
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Default Tyre size question!

Hi all,

Just bought a PT Cruiser (2.2 Turbo Diesel) and I need to get it 4 new tyres - have currently got 205/55 R16's on it but I've also seen that 185/65's and 195/65's are also recommended on it - what would be the best tyre for fuel economy? Does it have much impact on it?

Cheers for reading!

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  #2 (permalink)  
Old 07 Jul 2012, 12:05 pm
Obsessed Cruiser
Join Date: Sep 2001
Posts: 27,755
Default Re: Tyre size question!

Just my opinion, but the thinner the tire, the less rolling resistance so the 185/65 would be the tire for best gas mileage. Since you just got the PT Diesel, you'll be getting better gas mileage than anyone here on this forum or in the whole US of A no matter what tires you have.
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Old 07 Jul 2012, 12:28 pm
quicksilverdon's Avatar
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Default Re: Tyre size question!

Agree (as usual) with Crewzin.
Not sure about impact on speedometer - there are websites that compute speedometer error for you.
You have a thinner sidewall, better for mileage, ride, and rain/snow, but poorer at handling curves. All slight differences.
Type of compound in tire (tyre) also impacts mileage - generally, the higher the wear rating, the harder the compound, and lower rolling resistance. Softer compound wears faster, but has better handling and braking.
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Old 07 Jul 2012, 12:46 pm
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Join Date: Jul 2012
Posts: 2
Default Re: Tyre size question!

Cheers guys!!

I do love my Cruiser, shes in a bit of bad shape (bumps and grazes!) but I'm going to get her back to full glory!
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Old 07 Jul 2012, 12:49 pm
Vlefaive's Avatar
Senior Cruiser
Join Date: Jun 2012
Location: Whitby ON Canada
Posts: 1,630
Default Re: Tyre size question!

With diesel you could put square tires on it and still get better mileage than any of us.... Square tires are hard to find, you might need to check around Florida for those... just kiddin crewzin
'03 GT Blue/ autostick.. 160,000KM ( That's 100,000miles for y'all South of the border ) All the options, the heated leather is a must up here in Canada, Love the solid heavy duty feel and obvious Torque.. The Turbo is strong, fast and reliable.. People that don't understand the love of a PT, probably don't deserve to.
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Old 07 Jul 2012, 11:09 pm
UptownSport's Avatar
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Join Date: Jan 2011
Location: 55403
Posts: 3,912
Default Re: Tyre size question!

Light tires and wheels are supposed to make a difference- How much; dunno

with a shorter tire, for same speed engine will turn more RPMS (bad) but chassis will be lower to ground (good)

Michelin spent tons of $$$ of low rolling resistance research; I'd suggest buying that brand. I spent years as a tire buster and came away very impressed with Michelin.

The tires that last longest are on high end luxury cars- Why? because driver's won't subject themselves to high cornering forces-
Driving in straight line really doesn't wear a modern tire
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