The Ultimate Guide To Tire Sidewalls - How Good Are Your Tires?


How to read tire sidewalls and learn how safe your tires are!
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What does 235/35R20 mean? What does ZR mean? What is a tread-wear rating? What is a temperature grade? What is a traction grade? How about load rating, speed rating, and DOT badge? Car tires are a confusing mess to look at, with both SAE and metric units, and a complicated nomenclature.
That's where this video comes in. We'll explain all of the details surrounding the most common markings you'll find on tire sidewalls, with the ultimate guide to tires. How to read your tires! Make cars and coffee interesting again and read tire sidewalls all day.
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  • satish kumar
    satish kumar7 dager siden

    What is the meaning of colour dot on tyre side wall

  • Jeff Marx
    Jeff Marx28 dager siden

    Great video

  • Yusuf Imran
    Yusuf Imran29 dager siden

    That's a hell lot of information on a tyre 🙄

  • Дмитрий Хабаров
    Дмитрий ХабаровMåned siden

    always though the R16 meant Radius 16inch also, i don't think my tires have half that information in them

  • Andrewgyny


    9 dager siden

    A lot do not. More expensive and brand name the tire, the more information you get.

  • firstname
    firstnameMåned siden

    I had a tyre start delaminating recently. Checked the production date... it was made in 2005! Still had plenty of tread left, just got too old apparently

  • Andrewgyny


    9 dager siden

    Tires have an average shelf life of 6 years before deteriorating.

  • et troth
    et trothMåned siden

    I am new widow and now I know! Thank you many times!

  • Richard Sweig
    Richard SweigMåned siden

    What are your feelings about classic sports car tires? Approximately 185/65/14. My concern is the current style vs old. Thank you for your thoughts.

  • Anti Bullshit
    Anti BullshitMåned siden

    Wow! Superb! Learnt more than I needed.

  • Ch Vicky
    Ch VickyMåned siden

    I had p7 pirelli

  • Ch Vicky
    Ch VickyMåned siden

    Wow u r really doctor nice info

  • Zring ASI
    Zring ASIMåned siden

    Could you help me is possible using tire 215 60 16 instate 215 55 16 whatever same pattern wheel . Thanks

  • sulaiman sait
    sulaiman sait2 måneder siden

    Well explain sir

  • Dragos Pahontu

    Dragos Pahontu

    Måned siden

    I drive with summer tires in snow. It is such a bad idea it feels so sketchy.

  • Jose L
    Jose L2 måneder siden

    always making info so easy to digest. Greetings from Perú.

  • Faggot Rotten
    Faggot Rotten2 måneder siden

    I would throw that foam crap away

  • StereoSoundAgent
    StereoSoundAgent2 måneder siden

    BMW M3, Max Tire pressure 55psi. recommended pressure on the door? 50psi... I just run 42, 36 if its raining everyday.

  • Josue Sanitize your
    Josue Sanitize your2 måneder siden

    "don't worry the video will get far less interesting" 😂😂

  • RJW14
    RJW142 måneder siden

    yeah, racing tires just say milimeters / milimeters (of the entire tire mounted onto a wheel) / inches. Much easier to read

  • da ne
    da ne2 måneder siden

    Low tires can cause your vehicle to drift uncontrollably in corners.

  • Beat Meier
    Beat Meier2 måneder siden

    you forgot the TWI >. on the sidewall Tyre Wear Index points to where the thread bars are set to 1.6 mm

  • Pedro G.
    Pedro G.2 måneder siden

    Hi Jason, can you help to choose the best tyre in durability (more miles used) for a size of 185/55/R15? I was thinking about Continental Conti-EcoContact 6 to be my choise. Is this a good choise in your opimion? Tks.

  • doronkra
    doronkra3 måneder siden

    very well explained. thanks :-)

  • Kesateria Matahari
    Kesateria Matahari3 måneder siden

    now i have something to talk about during party or friends gathering.

  • Peter Poppe
    Peter Poppe3 måneder siden

    Question : my 718 Boxster has N-rated Pirelli P-Zero's, however I don't like them. Would you put the Michelin PS 4 S on the car (not N-rated however) or would you stick to the N-rated Pirelli's ??

  • rash j. s.
    rash j. s.3 måneder siden

    What does yellow or red dot markings mean on the sidewall of tyres?

  • ved fj
    ved fj3 måneder siden

    Great video, Jason! Very explanatory! I didn't get very well the extra load description. Lets say that car manufacturer recommended psi for the 2 front tyres will 34-36psi each. If you get XL tyre (instead of SL), should you increase the pressure to 38-40 for this case? Btw, you could make a video for the XL tyres... pros/cons!

  • sanel b
    sanel b3 måneder siden

    I just don't understand , if it's an electric car why didn't they make electric tyres. This all doesn't make sense at all. I truly hate tesla cars, just like I hate electric bikes

    FRAGS, CARS AND COFFEE3 måneder siden

    Sir my corvette has the Michelin pilot supersport 335/25/ZR20 But I found Michelin pilot super sport 335/30/ZR20 for LOTLOTLOT cheaper ! Shall I buy it ? Why is it so cheaper ??? Thanks

  • Dean Fielding
    Dean Fielding4 måneder siden

    Is it sad that I knew nearly all of those facts.

  • Amin Sulaiman
    Amin Sulaiman4 måneder siden

    Why don't you use manual setting for your camera, so your camera can maintain the same exposure, it can make more easy for us to read what is on the tyre.

  • chad rocca
    chad rocca4 måneder siden

    I'm impressed, not that you should care. Great video !

  • raymond menendez
    raymond menendez4 måneder siden

    I'm 67 and have owned plenty cars, trucks-- the only thing that I was interested in a tire was the price and the tire pressure-- going to check out the tires on my C10 now --

  • Lewis Williamsjr
    Lewis Williamsjr4 måneder siden

    Me too I’m just got it

  • Johnny Sins
    Johnny Sins4 måneder siden

    Went from 215/35/r17 to 235/50/R17 so I have some Faties now lol

  • Tom Thomas
    Tom Thomas4 måneder siden

    This video is nothing short of excellent. Everything you ever wanted to know about tyre markings but were afraid to ask.

  • Blu Keed
    Blu Keed4 måneder siden

    Good job;well explained.i just learned something new yet again 👨🏼‍🎓

  • Guilherme Cabral Freire
    Guilherme Cabral Freire4 måneder siden

    "Don't worry, the video will get far less interesting" lol! ahahahahahhahahahahahahahahahahahahahahahahahhh! That made my night (yes, I'm a bit lonely..)

  • faddyie
    faddyie4 måneder siden

    The best video on this subject available online

  • Serg
    Serg4 måneder siden

    you've overpumped your old tire. See how uneven wear is from the center to sides.

  • Romar Fajardo
    Romar Fajardo5 måneder siden

    What are the pros and cons of using a tire with speed rating lower than recommended? Im thinking to use an H rating rather than V cuz its cheaper. Thank you.

  • Rafa Muñoz

    Rafa Muñoz

    4 måneder siden

    if you dont overpass the speed limit of the tyre therse shouldnt be any problem

  • J Wester
    J Wester5 måneder siden

    A question. One of my new tires has a different production date. Is this a problem? They all seem to be produced at the same manufacture plant though

  • Ready Teddy
    Ready Teddy5 måneder siden

    Glob. I can smell the rubber from here.

  • Jan Sullano
    Jan Sullano5 måneder siden

    Watched this twice as I am planning to buy new tires. Off course only getting those Michelins. I am looking at the primacy 4.

  • oceanceaser
    oceanceaser5 måneder siden

    You rock man, thanks for the help, going to buy some tires today. Also how did you make that entertaining? Love the rolling focus on the tesla tires!

    ARDHENDU MAITY5 måneder siden


    ARDHENDU MAITY5 måneder siden


    ARDHENDU MAITY5 måneder siden


  • Rebecca In God I Trust
    Rebecca In God I Trust5 måneder siden


  • Spetsop
    Spetsop5 måneder siden

    Wait, so why is the cold tire pressure different than the car manufacturer's recommended tire pressure?

  • robbie cartwright
    robbie cartwright5 måneder siden

    1000th comment

  • Ray Shade
    Ray Shade5 måneder siden

    That makes it more complicated than a birth certificate

  • GSZero
    GSZero5 måneder siden

    You love that foam don't you? lol

  • Seb. Sar
    Seb. Sar5 måneder siden

    Why do they write a number for hight of sidewall which is a percentage of the tire width ? Why not just write the actual tire hight ? Why do we need to know what the percentage is ? It confuses the issue ! Or they should write 235 / 35% of 235/ Z R 20 . Or write 235 / 82.32 / Z R 20 Then people can understand without having to calculate how high the tire is .

  • Edgar Schaack
    Edgar Schaack5 måneder siden

    On my truck I have 245 which as you say is the width and the 265 is wider than the 245 but the 265 is also taller, why is that?

  • Brian Aiello
    Brian Aiello6 måneder siden

    An interesting point about the foam insert used on Tesla tires. Are foam inserts a good idea, and are they available for any tire? It seems to me that making a tire quieter would be a desired thing. Thanks.

  • John Nyirenda
    John Nyirenda6 måneder siden

    thanks for that great knowledge. now i see why my tyres have finished in 18 months.

  • Peepers 47
    Peepers 476 måneder siden

    Well done! I watched two other videos on the same subject. This is the first that provided the info I needed. 👍

  • Brian Nguyen
    Brian Nguyen6 måneder siden

    soooo helpful

  • fox trot 027
    fox trot 0276 måneder siden

    Llantes Llantes

  • Richard Pedroza
    Richard Pedroza6 måneder siden

    Can van and passenger car tire be the same?

  • dragon claw
    dragon claw6 måneder siden

    And please also tell me how to Choose tires for winter and summer. What's the difference

  • Sergei Davidov
    Sergei Davidov6 måneder siden

    The best video I saw. Thanks

  • D4Real
    D4Real6 måneder siden

    would it be unwise to just find my own foam ring and put it in my tire for sound deadening?

  • GymChess
    GymChess6 måneder siden

    Suppose you have H rated 210 Km/h like I have and still drive the car at say 220 Km/h. What would happen and how big is the tolerance before the tire fails? My own guess is that one could probably push it way above 210 Km/h before something happens.

  • Allan Baldemor
    Allan Baldemor6 måneder siden

    Hi,i change my tire from original stock to 265/65 r17 44psi so this will be the air pressure of my tire?i learn a lot from your video thanks

  • Cross
    Cross6 måneder siden

    Very informative thank you sir

  • Charley Brown
    Charley Brown6 måneder siden

    Can you do an explanation of different tyre types symbol and markings please, i/e/ summer tyre, all season/weather tyre and snow. Thanks.

  • Al Wolf
    Al Wolf6 måneder siden

    Balancing outer rings on heavy truck tires

  • Al Wolf
    Al Wolf6 måneder siden

    They use tire sealant in motorcycle tires

  • Al Wolf
    Al Wolf6 måneder siden

    Lots of good info tks

  • Bernard Ctxy
    Bernard Ctxy6 måneder siden

    so it's not metric system

  • Vic Orlando
    Vic Orlando6 måneder siden

    This was great!!

  • Rikard Blazicko
    Rikard Blazicko7 måneder siden

    DOT is department of transportation- its record of a date of production

  • James Anthony
    James Anthony7 måneder siden

    Wow!! Such great information that I didnt know. Thanks man!!

  • Swake_au
    Swake_au7 måneder siden

    I thought the ZR indicated a directional tread pattern?

  • Ron Simons
    Ron Simons7 måneder siden

    Very cool lol and I didn't fall asleep which is amazing.

  • Will G
    Will G7 måneder siden

    That tires does not have a P because it meets European standards. There is Metric, P-Metric, LT-Metric and High Flotation sizes. A lack of P indicates the tire is metric but European metric which has higher standards than the American P Metric.

  • porticoman
    porticoman7 måneder siden

    I just had the strangest wank ever.

  • Chris Morris
    Chris Morris7 måneder siden

    This guy makes me smile every time. Side note, do you go wheelin’ in that Tesla?

  • 8 year old
    8 year old7 måneder siden

    T 0 means you have to buy tires from me only,it's also means I got you on the leash

  • Alejandro Rubio
    Alejandro Rubio7 måneder siden

    Very valuable information!! “Treadwear” the standard is set to a rating of 100 is equal to 30,000 miles. (200=60,000, etc.)

  • Melmo's Salvage Rebuilds

    Melmo's Salvage Rebuilds

    5 måneder siden

    So.... ive had 580.... what does that mean?

  • John B
    John B7 måneder siden

    Good job, thank you. Maybe you can do off road tires next?

  • Tweaked818
    Tweaked8187 måneder siden

    Needed this. Just from looking at my tires, i need new ones lol

  • seeusoon007
    seeusoon0077 måneder siden

    Can we place that foam in any car tyre ?

  • ramkripal bishunath
    ramkripal bishunath7 måneder siden

    Zoom in on the tire info as u explain with your camera would helpfully on my phone. Maybe is better on my laptop.

  • yamahaU3
    yamahaU37 måneder siden

    So the 20 is the diametre of the tyre's inner rim, then why don't they give us a number for the outer rim diametre as well?

  • jamie
    jamie7 måneder siden

    The 35 means 35mm side wall when it's on the wheel and bead is set

  • 7S POWER

    7S POWER

    7 måneder siden

    Sorry, 35 is not 35mm but it's the A/R = Aspect Ratio of the Height : Width Ratio, in percent, 35%. The Width is 35% of the Height (OD) The height of the sidewall is 235 x .35 = 82.25 mm The overal sidewall height = 82.25 x 2 = 164.5 mm = 164.5 / 25.4 = 6.476" The OD = Overall Diameter = 6.476 + 20 = 26.476" Or OD = ((235/25.4)(2x.35))+20 = 26.476"

  • Gary Brown
    Gary Brown8 måneder siden

    The automobile ' manufacturers recomended air pressure is for comfort not for tire wear and safety , the tire knows what's best the older the tire the less safe

  • Bruce Lee
    Bruce Lee8 måneder siden

    I got tired of watching this

  • dsumhank
    dsumhank8 måneder siden

    Thank you for the in-depth explanation! I learned a lot from this video. do you know if the PS4S is also a directional tire? or is it just a outside/inside distinction? I think my tire shop may have alternated my tires left/ right. Is that an issue?

  • Chidum The Naija Gamer
    Chidum The Naija Gamer8 måneder siden

    Iv'e been driving for 18 years now i didn't know 90% of all this. WOW!!

  • Tui Wilson
    Tui Wilson8 måneder siden

    My federal st1 tyres has the same info

  • firm believer
    firm believer9 måneder siden

    1:40 hahahaha

  • Ian Hinkle
    Ian Hinkle9 måneder siden

    Love seeing the 3 different units on the sidewall. Teamwork at its finest.

  • Baha Note
    Baha Note9 måneder siden

    Hi Mr. Can I reuse this content? Does this have copyrights or we can benefit people?!

  • Nadeem Mir
    Nadeem Mir9 måneder siden

    thanks a lot mate for the info.

  • Knox Vitela
    Knox Vitela10 måneder siden

    I have these tires and upgraded them a bit bigger from stock and man, these tires are top tier

  • Rizalde Carulla
    Rizalde Carulla10 måneder siden

    very informative I learn a lot.

  • Heffe Dirte
    Heffe Dirte10 måneder siden

    Leaving a hello to help you out

  • Brem
    Brem10 måneder siden

    UTQG rating are next to useless when comparing tires, even within brands. You're better off ignoring all but the temp rating.

  • King nill V well
    King nill V well10 måneder siden

    trade wear = 300 x 320 = 96000 km = 59651 miles trade wear = 500 x 320 = 160000 km = 99419 miles Thanks all