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Toyota Prius Tire/Wheel Questions

86 messages,  Last post on Oct 31, 2009 at 12:13 PM

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What is this discussion about? Toyota Prius, Tires, Wheels, Hatchback, Sedan

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#22 of 86 Not related to tires by urbandude42 Apr 04, 2007 (8:26 pm)
Prius nightmare is over. Had 2002 prius. New computer, new fuel pump/ gas tank. Oh hell yeesss, they are all one piece on prius! Then the "hybrid" part all went bad within the past year. This was all covered. But I'm done. Got a corolla no problems since.
#24 of 86 new tires, lower mpg by rickhermann May 16, 2007 (2:32 pm)
Our '05 Prius with 37,000 miles just got a new set of plain-jane all weather tires. The tire shop filled them with nitrogen. We ran them at spec pressure on a cross-state trip, then upped the psi in all four tires by 2 psi. Either way, we got significantly lower mpg with the new tires. Driving was on interstate highways in eastern oregon and so. Idaho. We drove very conservatively at had to really be careful to break into the sub-40 mpg range. On similar trips we've averaged 51-53. Could it be the nitrogen, or the newness of the treads? The Toyota dealership couldn't find anything wrong. But somethings wrong. Any ideas? Rick Bellingham Replies to this message: 210delray (May 16, 2007 6:21 pm) pathstar1 (May 17, 2007 1:12 pm) 210delray (May 17, 2007 5:21 pm) capriracer (May 18, 2007 2:12 am)
#25 of 86 Re: new tires, lower mpg [rickhermann] by 210delray May 16, 2007 (6:21 pm)
Replying to: rickhermann (May 16, 2007 2:32 pm) It's not the nitrogen, and adding 2 psi isn't going to make any measurable difference. The tires may have higher rolling resistance than the originals. What brand and line of tires did you get?   But try a few more tankfuls before you give up. Was there a headwind on this one trip?
#26 of 86 Re: new tires, lower mpg [rickhermann] by pathstar1 May 17, 2007 (1:12 pm)
Replying to: rickhermann (May 16, 2007 2:32 pm) There are many posts over on Priuschat and Priusonline about new tires dropping mileage. It's normal. Should improve after 5000 mi. or so. I guess new tires are very "sticky", just like in NASCAR.   Many owners use 42 PSI front and 40 PSI rear for better mileage. Do check the tire sidewall for the max. inflation pressure, and do set the tire pressure when the tires are "cold" (not driven on for 5 hrs.). Replies to this message: 210delray (May 17, 2007 5:21 pm)
#27 of 86 Re: new tires, lower mpg [pathstar1] by 210delray May 17, 2007 (5:21 pm)
Replying to: pathstar1 (May 17, 2007 1:12 pm) Just adding that most passenger car tires now list a maximum inflation pressure of 44 psi, so running with 42 front and 40 rear will be fine. But some tires still have a max pressure of only 35 psi, in which case, you don't want to put in more than this.
#28 of 86 Re: new tires, lower mpg [rickhermann] by capriracer May 18, 2007 (2:12 am)
Replying to: rickhermann (May 16, 2007 2:32 pm) I'm going to address several issues, not just the one in the post I a replying to.   1) It is a little known fact that new tires have more RR than worn out tires, even if they are otherwise identical.   2) Tires designed for hybrids generally have less RR than other OE tires.   3) OE tires generally have lower RR than tires designed for the replacement market.   The above means that if you buy new tires for your hybrid, you should expect redictions in fuel economy, and the amount could be significant if you selected a different tire.   4) If the pressure listed on the sidewall says 35 psi max, then the tire can be safely inflated to 44 psi. However, there is a risk associated with using pressures significantly higher than what the vehicle manufacturer specifies. I consider anything more than than 5 psi as significant and the risk is that the tire will be more prone to impact type failures and punctures.
#29 of 86 Re: 2006 prius pkg#8 all season tires? [seeko] by elissacl Jan 23, 2008 (2:24 pm)
Replying to: seeko (Nov 05, 2006 7:32 am) I do not see replies to this post (on either Forum) and have the same question: what replacement tires are recommended for Classic Prius? I'm trying to balance traction (which the originals lack in rain and snow) with the gas mileage that I want to attain. I realize there will be a trade-off but would like to minimize it, obviously. Any recommendations are appreciated. Replies to this message: pathstar1 (Jan 24, 2008 8:28 am)
#30 of 86 Replacing a Single Tire on a Prius by pinko Jan 24, 2008 (8:17 am)
One of my rear tires blew out yesterday. Nothing lit up on the dash, since it was pouring rain, I hardly noticed anything, but the tire is toast.   Any suggestions re: replacing just one tire? The current tires are the originals that came with the car, which has 26,000 miles. I think they are Goodyear Integrity. Can I just get another one?   This is my first car, and my first tire issue, so any advice would be helpful. Replies to this message: pathstar1 (Jan 24, 2008 8:40 am) pinko (Jan 24, 2008 9:33 am) pathstar1 (Jan 24, 2008 12:52 pm) 210delray (Jan 25, 2008 8:35 am) and 1 more... waterdr (Feb 03, 2008 7:12 am)
#31 of 86 Re: 2006 prius pkg#8 all season tires? [elissacl] by pathstar1 Jan 24, 2008 (8:28 am)
Replying to: elissacl (Jan 23, 2008 2:24 pm) I put Nokian WR tires on my 2007 Prius and had -NO- loss of fuel economy, but a great increase in traction. They are "true" all season tires. They have the snowflake symbol on the sidewall, meaning you don't usually have to put on chains when it's required on interstate highways. They wear well in the summer, work well in rain, in snow, and on ice. The current version is the WR G2.

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