Replace a single tire?
 

Hey everyone, hope all is well!

I have 3 HP Primacy tires that have not been used for a while and I wanted to put them back on my car, but I have a bit of an issue.

I initially put away the tires after one tire blew out, and replaced them with PSS, but now those are worn. The HP's have only been used for 1 year and only have ran about 5-10k.

My question is, can I put a single new HP Primacy tire with the rest or will that affect the treading etc. I was thinking about buying a used tire, but now I don't feel safe using a used tire.

Here are the 3 tires...Will they be ok with a single new tire?
https://i.imgur.com/qh18PKt.jpg
https://i.imgur.com/8CppLHz.jpg
https://i.imgur.com/ibd3upk.jpg

It'll work just fine. Id be more worried about those other 3 tires since they might be getting old, i guess it would be alright since you didnt really use them much.

Great thanks!

Is that really a cause for concern, what could happen to tires that haven't been used in a while?...Because these 3 tires have been sitting in the backyard shed for around 4 years now.

Replace a single tire?
 

Rule of thumb is that tires lose a significant portion of their grip after ~6 years of being made, and after 10 years they should be replaced regardless of thread wear.

I personally don’t use performance tires at all after they reach 6 years.

Check for the date stamp on them, if they’re older than 2016 I’d toss them.

https://m.tirerack.com/tires/tiretec...e&gclsrc=aw.ds

Might want to get a used one with almost the same amount of tread life left, if possible.

If you buy a new tire, you'll be stuck with a single one once it is time to replace the old set but you could keep it as a spare just like your previous incident.

Based on the pictures, them tires still got a good amount of life left on them.

It would depend on how they were stored. Were they garaged or left outside in direct sunlight?

Doesn’t really matter. Exposure to oxygen is what ages the tire compound. Unless they were sealed in vacuum bags, they’re more or less done after 6 years.

Shoot! Looks like it says 2015. Is there any chance it's safe to use? Money is kind of tight right now...
https://i.imgur.com/Yoec8Iv.jpg

It was left in the shed in the backyard for about 4 years, so no light. Never touched once they were taken off.

I forgot about how oxygen could be a factor, thanks for mentioning it. :thumbsup:

It might be best to play it safe. Better to spend money on new rubber than to be in an accident due to old tires.

I don't see any signs of dry rot so I'd say you'll be ok. The tires don't look too worn either so the one new tire shouldn't have that much of a difference in circumference (which I think is where the recommendation to always change at least 2 tires at a time comes from). That said; I'm just some guy on the internet.

Most sources will tell you 10 years is the maximum you should be running, I’ve noticed that tires between 6 and 10 years old are more unpredictable then before. I wouldn’t say 2015 tires are unsafe, just realize they may behave differently at the limit and the limits will be lower. Better than running a set of $60 tires that’s for sure.

Oh, and put the new tire on the front, just in case there is a small difference in rolling diameter between the old tires and new tires, your LSD won’t have to deal with it.

@ 5:01

https://youtu.be/io8ZjMEzT_E?t=301

Yea sunlight and heat will quicken the process too, and dry the tire out. Modern tires are pretty resistant to that though, they have a molded-in dressing/conditioner that ‘sweats’ out of the tire over time and protects the surface of the rubber. That compound sweating out is what makes tires look brown after a while.

Just inspect the tires. If they still look and feel fine they will be. There is not a drop dead date on them. I have seen 6 month old tires I wouldn't touch and 10 year old ones that were still perfect.
Keep in mind that the different tread and wear patterns, stiffness and other variances between makes have been know to play havoc with sensors and the diff!

EDIT: As Trans said and I just noticed.

My experience with Michelin tires is that they don't age well so I would probably avoid driving on them for longer than necessary. Even if you get another 2-3 years out of them you're also quickly approaching the 10 year mark which is the generally accepted maximum date for when tires should be replaced regardless of wear.

The OE Primacy tires are also quite expensive so I think your best bet would be to find a used tire in similar condition to tie you over until you're ready for a new set of tires.

What kind of weather do you deal with? Might be better to sell the 3 tires to a local shop if they take them. Those tires are pretty pricey new. Maybe look for a set tires used from local ads/forums. For GT Radial SX2's in 215's are 79$ a tire from tirestacks...

Thank you all for the great advice and suggestions! I haven't been on here for a while and it's awesome to see familiar users!:thanks:


So I spoke with a couple dealers near me and they all say the same thing, my current PSS are cracked and require immediate replacement, and my stored 3 Primacy's are pass the 6 year mark and may develop cracks more quicker.
Plus, I've found 2 nails in the tires that will require patch's. The total to put the old primacy's on doesn't seem smart, and I will probably have to install new ones soon after.


Haha I have decided I am going to sell the 3 Primacy's at any price and buy new tires!:happyanim:

...And I'm planning on getting the Michelin Pilot sport 4S! I wanted this one a while ago but they didn't have our size so I went with PSS.

These two statements don't concur.

Maybe look at Falken FK510 or the Firestone Firehawk Indy 500. Both are great tires and much cheaper than the PS4S

I agree PS4s are nice but much better bang for your buck tires out there. No need to pay the Michelin tax. Look at he Indy firehawks and I really like GT radials SX2s.

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Hahaha I know...but hear me out!

If I spend the extra money I will be buying an all around great DD tire, plus be able to use the tires longer and also take advantage of the 30k warranty for the next tires. My current PSS lasted 4 years.

...Or am I just being delusional?

Up to you but it's overkill for a DD. Do you deal with cold weather at all?

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Those Michelin sport categories tires cant just be costly because of the brand name...right?
How would you say the overall quality is compared to tires like Indy firehawks, in terms of grip, reliability, durability etc?

I live in Maryland so we get about one snow storm a year for a couple days, I was thinking no need to lose performance for just a couple weeks of snow out of the whole year.

LOL, plus I was thinking of just using my sister's car when it does happen to snow here in Maryland.
....But I wont tell her that:bellyroll:

I would say they are all going to be pretty close in DD and back road use. Now the SX2 are a 260tw tire, Firehawks are 320tw and I believe the PS4's are around that as well. They are really good tires but if you can get 90% at haft the cost it's worth it in my eyes

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Why not put 2 of the old michelins in the front and grab 2 new for your rears?

Save you some money this way, while maintaining the matching sets for your fronts and rears.

And if you're strapped on cash, pass the michelins.

Falkens are pretty good for daily with good performance. Indy's are a bit harsher and firmer but more performance than the falkens. At least that's how they've felt like to me.

I've read that mixing tires aren't good and that you should stick to the same brand and model, is there any truth to that?

Also, how long did both the falkens and Indy's last you?

It's a bad idea to mix different tires on the left/right sides. But different pairs on front and rear is fine. I'd stick with the higher performing tires on the rear.

I had a square set up of the Falkens, but I got a nail on one of the side walls. So I got rid of one pair for an Indy 500 pair.

My indy 500's died on me bc I got another nail that hit the side wall. They were great for performance, but pretty harsh.

The Falkens have been in use for .. I don't remember how long. Over 2 years or so now, looks to be holding up fine.

I'm currently using Falken FK510's on the rear and Nexen N'Fera in the fronts. N'Fera are noticeably worse in performance, but they're soft and less NVH. Makes for much easier time going over speed bumps in parking lots. They actually make a cool sound when I hit the breaks.

I'm sorry but this is very poor advice. I do not recommend mixing tires as you can get very unpredictable results.

Haha guys so happy! I found a great deal on the Michelin sport PS4 for $650!
I think that is a pretty reasonable price for these tires.

Quick question, on the checkout page there are three add-on options I can pick, TPMS sensor $42, TPMS rebuild kit $2.50 and Valve stem $3 for each tire.

What do these options mean, and do I even need to buy any of them since I'm replacing all my tires.

My car has 38k miles.

Tire Pressure Monitoring System

i'm not sure about the '20 with that fancypants display, but previous models, the TPMS was an unhappy angry light on the dash that would blink if any condition other than all tires were present, and all pressures were correct.

sometimes, the original sensors can be kept, sometimes they're damaged in the process of unmounting and mounting the new tires(due in no large part to the low profile nature
of our tires), and sometimes they corrode to the point that just taking them off the car is enough to need replacement.

there's also a battery in each wheel, so if you choose to keep what you have, there's the potential that your existing battery will go dead halfway through the life of the tires, and you'll need to have the tire removed, replace the sensor, remounted, and rebalanced.

it's not a bad idea to replace if you desire to maintain the system and it's toddler-like light bulb.

it's technically illegal to remove any part of the system, as it's a federally-mandated safety system by government law now, but if given the option by the tire shop(and many will do it because you're a paying customer, or if you simply bring only the wheels/tires in, they can't program it anyways), and you routinely check your tire pressures anyways, a bit of black tape over the light, and the standard cheaper tire valves work just fine.

Don't worry about any of that stuff.

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Thanks man!

Also, I know these tires are not meant to be driven in the cold or snow, but will the tires or the compounds in the tire become damaged if the car is exposed to snow and really cold weather...even if the car is not used and not driven in?

My car is over 8 years old has over 190,000 miles on it and has many tire changes. But it still has the original TPMS. The light has never "blinked". It turns on whenever the pressure is low. Fill the tire up and the light goes off.

If it ain't broke.......

A competent shop will not damage the sensors. They’ve been mainstream for over 10 years, this is not new tech.

You can swap the sensor without removing the tire. You pop the bead right by the sensor and get it out through that tiny gap. My mechanic has done it, checked balance, didn’t need weights adjusted. Took 10 mins start to finish.

Guys quick question, when I place the order for the Pilot Sport 4S, what year should they have been made in?

Really depends on how old the stock is. Really a crap shoot. Also guessing based on the hood deal they could be older stock but still fine.

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Do you think I should call and ask before placing the order, I'm guessing anything 2019+ would be ideal right?

They won't do that. Your overthinking things. Just enjoy the new tires [emoji106]

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Haha guess your right...Thanks!:thanks: