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post #1 of 9 (permalink) Old 05-05-2009, 08:29 PM Thread Starter
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Default New Tires

Well I took the plunge and bought Goodyear Assurance Fuel Max to replace my worn out Integrity's after 38K miles.

Do I like them? In a word - yep! They are everything the Integrity's weren't: low noise, nice ride, WAAYY better handling and better fuel economy to boot. I'm rather thrilled. And this with the standard 35/33 PSI! My first rides on the tires were to the Airport and back, a 50+ mile trip each way with a week between. Both times were in the 40s with the ride back in the pouring rain against a rather stiff headwind. After 110 miles the computer showed 49.7 mpg. And no I drive normally. But seriously, if you are looking for replacement tires I highly recommend them.

Total bill including alignment, mounting, new valve stems, lifetime balancing, rotation and road hazard (and of course TAXes, environmental fees, etc., ad naseum) was $554.34. BTW that was without rebates.

2005 Salsa Red Pearl AI
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Michelin X-Ice on 15x6.5 Sport Edition D3 Silver Wheels
Goodyear Assurance Fuel Max on OEM Wheels
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post #2 of 9 (permalink) Old 05-09-2009, 12:23 PM
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Default Re: New Tires

I replaced with the same about a month ago, although I am running mine at 54/52. I especially like how quiet they are. I'm guessing my mileage is not quite as good as my bald Integrities, but as with all tires these will improve with age.

PA P

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2004 Lifetime mpg: 52.3 actual / 53.3 MFD 60.7cs
ScanGuage II Sharkfin Amsoil 0/30 56/54
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post #3 of 9 (permalink) Old 05-10-2009, 10:48 AM
 
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Default Re: New Tires

Were the tires for an older model prius? I just bought a 2002, and I've heard there are a lot of tire issues. I'm wanting to buy the longest-lasting tires I can for a 2002. Thanks!
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post #4 of 9 (permalink) Old 05-11-2009, 07:08 PM Thread Starter
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Default Re: New Tires

2005 Prius. I would imagine the same tire size for a 2002. Maybe mrv can answer that better than I.

BTW don't get suckered in by the regular Assurance. These a small gas gauge on the side to signify Fuel Max tires. Still keeping mine at 35/33.

2005 Salsa Red Pearl AI
Engine Block Heater
Michelin X-Ice on 15x6.5 Sport Edition D3 Silver Wheels
Goodyear Assurance Fuel Max on OEM Wheels
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post #5 of 9 (permalink) Old 05-11-2009, 07:47 PM
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Default Re: New Tires

The tires are different between the classic (01-03) and the current (04-09). 175/65R14 is the standard size tire for Classic Prius. You'll find the choices available for that size very limited. Fortunately, the 5.5 inch (14 cm) aluminum rims of Prius allow you to use an alternate size. Both 185/60R14 and 185/65R14 tires fit very nicely.

185/65 R15 is the standard size tire for 04-09 Prius (excluding the Touring model).
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post #6 of 9 (permalink) Old 05-11-2009, 08:43 PM
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Default Re: New Tires

I am on my second set of Michelin HydroEdges on a 2002 Prius. Went one size up to 185/65x14, and have always run 44/42. Speedometer is dead-on.

First set was replaced early before a summer road trip, at 68,000 miles; because I didn't want to take a chance on running older tires in the desert heat (110-115 degrees air temp, and much hotter on asphalt). Those would probably have run another 10,000 miles, and would have lasted the advertised 80,000 miles.

The second set has about 35,000 miles on them; and while they don't look brand new, they've got a lot of miles left on them.
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post #7 of 9 (permalink) Old 05-12-2009, 01:56 AM
 
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Default Re: New Tires

Thanks so much for the info. I keep reading that the classic Prius eats rear tires due to the weight of the battery. Have you found that to be true? Have you found certain models of tires to be preferable? Also, I'm about to take the 2002 in for an inspection to make sure all is in good working order. Anything special I should ask of or point out to the mechanic in regards to particular things relating to the 2002? He's a Toyota mechanic. Thanks for your help, all.
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post #8 of 9 (permalink) Old 01-20-2010, 01:46 PM
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Default Re: New Tires

My '01 has almost 200k on it and my mileage has grown over the years from around 47 to 50. I've been using Yokahama's at the OEM size for most of that but they may not have been to correct load range. I put Pirelli 185's thinking it not much different and my mileage dropped to 39.5. I went up to 35/33 on the pressure and got 4 mpg back. After 2 months of experimenting with tire pressure they agreed to swap out for the proper size and load range.

Goin' for 500K!
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post #9 of 9 (permalink) Old 01-20-2010, 02:25 PM
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Default Re: New Tires

The Michelin HydroEdges wear well. Also, the rear tires have no steering or braking load, and the weight of the batteries is nothing compared to all of the hardware and electronics on the front. The rear tires are like trailer tires and if not rotated, would probably last twice as long as the front ones, maybe longer.

I skipped a tire rotation last year, and you can see noticeable wear on the fronts, and the rears looked like they hadn't changed at all.

The biggest thing is to keep them inflated to the maximum rated air pressure (especially the front; a little less in the rear). The Hydroedges are rated for 44 psi, and the fronts are pumped up to 44, and the rears are at 42. The weather is nice now (except for rain), and I am currently running 52 mpg in town.
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