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Buy new tires at 35k? Which is best?

Discussion in 'Gen 4 Prius Main Forum' started by mudworm, Jan 6, 2020.

  1. mudworm

    mudworm Member

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    My tire pressure indicator starts to come on frequently now, about once a week. I'm sure one or two of them are leaking air, but I pump all four to 40 (vs 35 or 36 recommended). It gets annoying. The 2018 Prius Two is now at 35k including a tire I replaced at 9.5K from the dealer due to a non-repairable puncture. At 25k service, they recorded 7/32" and 5/32" tire tread.

    If this was your car, would you just get a new set of tires? Or, would you just keep adding air?

    If replacing, which tire is what I need (for mild SF Bay Area climate without snow and with rain)? I'm looking at what Costco offers. My commute includes paved windy mountain roads. I make long drives on highway from time to time.

    Tire / Warranty / Set of 4 (incl. discounts)
    Michelin - Premier A/S 60000 $453
    Michelin - Defender T + H 80000 $425
    Michelin - X Tour A/S T + H 80000 $413
    BFGoodrich - Advantage T/A Sport 60000 $365
     
  2. esfishdoc

    esfishdoc Junior Member

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    Hmmm.. as a world class procrastinator having nursed leaking tires off and on over the years instead of getting them fixed, I can tell you it frequently lead to a flat tire. To borrow a phrase from medicine: All bleeding stops eventually. I know this is maybe outside the realm of normal for some people... but why not consider getting the tires looked at and repaired?
     
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  3. bisco

    bisco cookie crumbler

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    agree^^^
     
  4. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

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    Anything above 4/32 of an inch is considered to be adequate tread depth...YMMV.

    I always replace my tires 4 at a time. If I have one tire that had to be replaced early due to a road hazard I'll usually save it for the spare rim and buy 4 new ones anyway.
    I usually put Michelin Defenders on my CFO's car, and we've had very good luck with them.
    Of course....we regularly keep the air topped off and rotate and balance the tires every 5-6k (free at the big-box stores.)

    The TPMS, or Tire Pressure Monitoring system isn't really supposed to take the place of a tire gauge.
    The newer units (in some makes, not sure about Yota) can tell tell you when your tires are down just a few PSI, but you can detect 1-2 psi changes more easily with more frequent, manual checks.
    I'm not THAT anal about it but every time I check the oil, I grab the gauge and do the tires as well.....usually every 2-3 fillups.
    This means that when my TPMS light comes on, I can immediately presume that something is physically wrong with whichever tire it's telling me is low and start making plans for a visit to the local tire shop.

    Repeated TPMS alerts might mean that there's something much more seriously wrong with a tire than a slow leak.....like a slow leak caused by a nail or screw in your tire and this bears investigation......unless you want the tire to rapidly spit out the rest of the air at an unfortunate time, like when you're late for a very important appointment.....at night.....in a sketch neighborhood.....in the rain.

    Good Luck!
     
    #4 ETC(SS), Jan 6, 2020
    Last edited: Jan 6, 2020
  5. Salamander_King

    Salamander_King Senior Member

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    Why not fix the leak? It would cost $10 if it is a just slow leak on valve or maybe a tiny nail.
     
  6. Mambo Dave

    Mambo Dave Active Member

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    Costco just fixed a recurring leak in one of my tires. Third time I showed up, I told the guy that if it was a specific tire that was low (again, based off of the archaic TPMS not telling me pressures in each tire), that it would need checked and repaired.

    I usually ask what they found and fixed, but they were so busy - and only charged me $11.73 or something under $12, that I didn't care. Thanks!

    The thing about OEM tires is that the compound is usually a cheaper, less resilient compound than other models sold by each manufacturer. I've found that when OEM tires are half-worn they just flat so much easier than good (mode, but worn) tires from even the same tire manufacturer. Sometimes it's just worth getting rid of OEM tires early.
     
  7. CooCooCaChoo

    CooCooCaChoo Senior Member

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    Yeah, my money is on getting the leak fixed unless the treads have worn down to the wear indicators. At that point you should just use the money towards new tires. If you do get the leak fixed, rotate the tires with the most tread up front where its more critical.

    And If I were to get new tires, I would opt for Bridgestone Ecopias or Michelin Energy Savers.
     
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  8. priusman09

    priusman09 I used to be a TDI

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    Well deciding on getting new tires is a hard one, and it seems that most of my new cars needed tires by 40k regardless of make. While the tires you list are good or great tires, you should be looking only for LRR low rolling resistant tires if you care to maintain your fuel economy. Picking a regular non-LLR tire can cause your mileage to drop in excess of 10%. Some people hate the tires they have on their cars and say also LRR tires are junk. Certainly all tires have different qualities and strengths, and there are some LRR tires that are better than others. I have had personal experience with the Michelin Energy tires, and they were very good and probably provided the best mpg of any tire I had on my 09 Prius in 225,000 miles. The Michelin A/S is a very good tire too, but does not roll as easy as the Energy if you compare the two on the Michelin website. The other tires you listed are not eco friendly tires. A great resource is Tirerack.com and search for your vehicle and check then “eco-friendly” box on the filters to see what tires fit your car. I really like the customer ratings and test reviews to help select the best tires for my cars. Certainly Costco may be able to order in tires if they are a brand they carry. See if this link works for the Tire Rack search (with eco-tires selected) https://www.tirerack.com/tires/TireSearchResults.jsp?tireIndex=0&autoMake=Toyota&autoYear=2017&autoModel=Prius&autoModClar=Three&width=195%2F&ratio=65&diameter=15&sortCode=38050&skipOver=true&minSpeedRating=S&minLoadRating=S
     
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  9. Mambo Dave

    Mambo Dave Active Member

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    I thought that the general consensus was that many Prius owners don't want the eco-friendly tires, and instead want normal tires since they roll quieter.
     
  10. Mambo Dave

    Mambo Dave Active Member

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    There again, in a heavy-rain, or tropical-rain, state, half worn is the limit of tires I run. I want deep sipes to prevent hydroplaning, and new to half-worn is all I normally go for tires before I replace them.
     
  11. sclevine

    sclevine Active Member

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    Seems waaay premature to replace the tires. I replaced all 4 of my tires at 70k. Save your money and get the leaking tire(s) patched - you probably picked up a nail or screw.

    Also, replacing the tires doesn't mean you won't have problems. After I replaced my tires, I had 3 punctures patched within 6 months, from different incidents of picking up nails or screws on the road.
     
  12. pianewman

    pianewman Active Member

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    Actually, the opposite is true. Firestone, and others (I believe Costco) always put the deeper tread on the rear. Too much grip in the front and too little in the rear can cause the rear to slide around.

    I've gotten used to the Ecopias on both our Prius', and on our 2015 LeafS, as well.

    I liked the Michelin Energy Savers on the Fusion Energi we had for a year. They were quiet, rolled easily, BUT...I did NOT like their wet traction...at 34k miles...too slippery for me!
     
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  13. alanclarkeau

    alanclarkeau Senior Member

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    Absolutely - every tyre company would agree - best tyres at the rear. Many sports cars have larger wheels at the rear - for instance PORSCHE Panamera (front engine) Tyres front 275/40; Tyres rear 315/35.

    DUNLOP told me:
    upload_2020-1-7_9-30-48.png
    upload_2020-1-7_9-31-17.png
     
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  14. GadgetVirtuoso

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    The TPMS that comes with the Prius is reporting the tire pressure, the Toyota GUI just doesn't display this information. I purchased an aftermarket stereo to get a touch screen Carplay/AndroidAuto and with that stereo, I can see the tire pressure and temperature of each tire in the Pioneer GUI.
     
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  15. Tande

    Tande Active Member

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  16. Mambo Dave

    Mambo Dave Active Member

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    The only time I've hydroplaned and banged-up the front of a car was from hydroplaning the rear tires, so I agree. The nice person-end came around on me. Good times.
     
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  17. jteran5

    jteran5 Active Member

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    I was reading this and got lost when Allan wrote Alan advising that Allan was no longer with the company.
     
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  18. Mambo Dave

    Mambo Dave Active Member

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    I have no clue how 'nice person' as opposed to 'swear-word rear-end' got in my post, lol.
     
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  19. mudworm

    mudworm Member

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    First, thanks to all of you who chimed in! I've been busy and was not able to respond sooner. Here below is my experience. Thought I'd write everything down for others who stumble here. For 13 years of driving my CR-V, I never needed to add air to tires myself in between services (no indicator anyway), so I was a rookie in dealing with this stuff.

    TL;DR: Free air from gas stations is a nice promise, but can be pain in the butt to get when you need it. Costco is really good/convenient for topping off air on a slow leak before you get a permanent fix. Invest in a tire pressure gauge (manual or sensor type).

    I intended to try to have it fixed, but thought I should at least figure out which one was leaking first. So I drove around for some time.

    I'm in CA, where I was told gas stations are required to provide anyone who ask for air and water (for car) free of charge. However, I have seen signs saying that it is free only for customers who purchased gas. Kinda confusing. With the Prius, I don't need gas often, so when I need air, I just go to a station and ask. So far, never was given a hard time or attitude.

    That said, there was one time, I needed air, and stopped at five stations before I could get it. First two were out of order. Third was not on, and no clerk there to turn it on (and I didn't have coins with me to make it run). Forth was an ARCO, it turned on, but there was no gauge, and I didn't have one myself yet. The old nozzle was extremely hard to operate. It makes a lot of hissing noise and was not clear whether it was releasing the air or adding air. I figured, screw it, I just add some before I reach the next station. Fifth station was a Chevron. The pump was out of order. But the clerk told me to pull up to service bay. The nice gauge showed that I had pumped two tires to 80+ psi! Holy smoke! No wonder the indicator was still on despite my visit at ARCO. Not sure if that did any permanent damage or not. Finally, got the tires to the right pressure. Whew!

    I went to Home Depot and bought a cheap digital gauge. When it worked, it was fine. But occasionally, it was hard to align right, and I swear it lost 0.5psi just when I was trying to get it aligned to take a reading. Thought to myself, maybe I should invest to buy a better gauge. Then I saw this recommendation, and placed the order. (Thanks!)

    Two nights ago, pulled up to Costco Tire Center just at their closing time to make sure to top off the tires. Wow, I didn't know it before, but Costco rocks! Well, actually I always knew. They don't need a gauge. The hose will automatically release or pump air to reach the desired pressure. So fast! The guy told me my tires look fine and I don't need to replace them yet if the leak can be fixed. He spotted a nail in the tire that I had suspected. I'm going back tomorrow to have the tire patched (if fixable) and rotated. And then I'll install the sensor gauge to have peace of mind in the future.
     
    #19 mudworm, Jan 12, 2020
    Last edited: Jan 12, 2020
  20. mudworm

    mudworm Member

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    Follow up question. Do you own this yourself? Just took the unit out of packaging. Plugged USB charging cord in and nothing happens. No indicator light anywhere that shows it's charging. Pressing any of the buttons does nothing either. The unit feels like a dead toy (very light weight) in my hand. Not sure if I'm missing anyone. The item got good reviews, so I do not expect to have received a fake. Weird.