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About Barry Smith
(Top Expert on this page)

Expertise
I have over 30 years experience in the design, manufacturing, and testing of tires. I have served as the technical advisor to the "800" number. I have authored or co-authored many publications - usually without credit. I can answer almost any technical question, but please don`t ask me to compare brands. I have prejudices because of my work experience.

Experience
Member SAE (Society of Automotive Engineers) Member Tire Society (Tire Technical Organization) SCCA Regional Competiton License holder Authored many training manuals on tires, their care and use.
   

You are here:  Experts > Autos > Auto Parts > Tires

SubjectDate AskedExpert

tire size change7/18/2008Barry Smith
  Q: I have a 1998 Saturn SL2 stock tire size is 185/65/R15. I had a blow out on the back right. Replace ...
  A: Kirt, It's best to have 4 of the same tire all around - meaning 4 of the same size, brand, tire ...
tire mounting7/18/2008Barry Smith
  Q: Yesterday I purchased a pair of Douglas brand 15" tires at Walmart and had them mounted on the front ...
  A: Dan, These are obviously asymetrical tires - meaning the tread pattern is different depending on ...
Truck tires, PSI and rubber peeling7/17/2008Brett Harrell
  Q: This is sort of a two part question. I have a 2004 Dodge Ram 2500 Diesel 4x4 quad cab short bed with ...
  A: Caressa, 75psi is the exact psi I would recommend for the front/rear. Your vehicle will handle ...
tire availability7/17/2008Brett Harrell
  Q: I have a 1963 Cadillac Commercial Chassis ambulance that originally came with a 8 ply white wall ...
  A: Paul, Yes the 8.90x15 was dis-continued a long time ago. As for what Kelly is or isn't still ...
Douglas Tire manufacture7/17/2008Barry Smith
  Q: I put 4 Douglas tires on my wifes Dodge Van in January 08. They are the noisest tires I have ever ...
  A: Curt, PJ = Kelly Springfeild in Fayetteville, North Carolina. Kelly Springfeild is wholly owned by ...
Rear End Sway Under Load7/17/2008Barry Smith
  Q: Barry, I have a Dodge Ram 5500 with a wrecker body. The tires are Goodyear 225/70R19.5 with a load ...
  A: Bob, I'm not sure if this is a duplicate post or not. If it is, ignore it, please. I will still ...
max load at psi?7/17/2008Barry Smith
  Q: What is meant by 1550 lbs max load at 35 psi? Most midsize vehicles weigh more than 1550 lbs. Or is ...
  A: Larry, The figure you referred to is the load carrying capacity of the tire - and in this case, it ...
Fix a Flat7/16/2008Brett Harrell
  Q: What is the big deal about using fix a flat and Retailers like Walmart saying they won't cover the ...
  A: Randy, Per your description of the location of the damage to the tire this tire was NOT ...
Viva 2 Tires Purchased from walmart7/16/2008Barry Smith
  Q: I bought a set of 4 tires from walmart, April 2008 - I ran over some gravel in the road and two ...
  A: Lillie, No this is not typical, but it is also not unheard of. I suggest you go back to WalMart ...
Rear End Sway Under Load7/16/2008Barry Smith
  Q: Barry, I have a Dodge Ram 5500 with a wrecker body. The tires are Goodyear 225/70R19.5 with a load ...
  A: Bob, It is possible that the tire pressure is causing the problem. So the first step in the ...
Tire Sizing7/15/2008Brett Harrell
  Q: I am planning to buy an extra set of rims and tires for the winter season. My Toyota Prius came ...
  A: Ray, To my knowledge there are limited choices for 15" rims to fit your vehicle. Your dealer ...
Wheel RPM and Air Presure...7/15/2008Barry Smith
  Q: The subject came up that one of our employees was driving around with his rear passenger side tire, ...
  A: Tim, I don't think you are going to like my answer but here goes: You asked: ...
DOT tire codes7/14/2008Barry Smith
  Q: I recently saw a 2020 undercover report on "new"tires sold in the US. I recently purchased a set of ...
  A: Dave, You gave me everything except the date code. Look on the other side of the tires. There you ...
Tires for my Infinity7/14/2008Brett Harrell
  Q: Good morning...could you recommend an good all around tire for my 2004 infinity g35 AWD? I'm looking ...
  A: Shelly, The best tire line, in my opinion, that meet your criteria are the Toyo line of products. ...
Follow up on Ambulance Tires7/14/2008Brett Harrell
  Q: We have the Dodge Cummins 4500 10 lug ambulances and need different rims. What semi rims will fit on ...
  A: For rims I would reccomend a Fleetpride dealer. Although I believe the issue here is tires. Bryan ...
Ambulance Tires7/13/2008Brett Harrell
  Q: We bought new ambulances from a company that has never sold to "rural districts". This meant for us ...
  A: Bryan. I'm afraid that I can't give you a specific answer to this question. However, I believe ...
maintaining proper tire pressure at high altitude7/13/2008Barry Smith
  Q: Mr. Smith: If my automotive tires are set to 32 p.s.i. at sea level, I understand that my tire ...
  A: John, Yes, this is true, but you have to consider that the temperature is likely to drop as you go ...
LT type tire on a Dodge Van7/12/2008Brett Harrell
  Q: I have a 1994 Dodge 250 Ram Van. It is a conversion/family van and it has P235 75 15 tires on it. ...
  A: Mike, Yes your Van should be equipped with LT tires or at minimum an Extra Load tire however, if ...
tubeless tyres v/s tube tyres7/11/2008Brett Harrell
  Q: How do tubeless tyres hold air?
  A: In lay man's terms when a tubeless tire is constructed an Inner Liner is incorporated in the inside ...
Gas mileage7/11/2008Brett Harrell
  Q: I've just visited three stores and asked each to make tire recommendations for the tires which will ...
  A: Tim, I would look into a touring, a/s season tire. As for wall thickness you or the dealer ...
Date coding7/11/2008Barry Smith
  Q: I have two older GoodYear Eagle ST tires they are new old stock with the following information ...
  A: Ken The DOT codes consist of a 10 to 12 digit number that appear in the immediate vicinity of the ...
Michelin Tires7/10/2008Barry Smith
  Q: I recently purchased a set of LT265/70R17 tires for my Dodge 2500 Diesel truck. Original set was ...
  A: Kyle, The problem here is that the Hunter GSP9700 uses a relatively small diameter wheel, while the ...
Nissan Pickup Tire Inflation7/10/2008Barry Smith
  Q: Barry, I have a 1994 Nissan Pickup. The placard on the door states GAWR FR 2200, 26 PSI and GAWR ...
  A: Chris, If I'm giving out advice, I alwas say use the placard pressure and maybe 3 to 5 psi more. ...
Tire size7/10/2008Brett Harrell
  Q: What is the maximum size LT tire I can put on my 2002 F150 Supercrew with te FX4 package.... 17 in ...
  A: Todd, The size choices for 17" rims are limited. However companies such as Pro Comp and Mickey ...
tires rotated wrong7/9/2008Barry Smith
  Q: I had tires rotated and heard a thumping noise. Long story - the directional tires were rotated ...
  A: Cinda, The real problem here is irregular wear which is caused by misalignment and aggravated by ...
Can I use P-metric tires on my truck?7/8/2008Barry Smith
  Q: I own a 1994 Chevy C2500 ext cab Truck. The label on the door jam says the tires should be ...
  A: Tony, First, the original rims on your truck are 6.5" wide. That means the widest tire you can put ...
Replacing only one tire AWD vehicle7/8/2008Brett Harrell
  Q: I have an 02 Tribute with the original tires used only in the summer (studs are on 7 mos of the ...
  A: Four years is a general rule of thumb for the life expectancy of tire. There is not a hard & fast ...
Replacing Murano front tires with a different brand.7/7/2008Barry Smith
  Q: Is it acceptable to replace my AWD Murano's front tires with a different brand if I match the size ...
  A: Kerry, It is not quite clear from the manual what Mitsubishi thinks - and they are the folks in the ...
Tires for 2002 Toyota Highlander7/7/2008Brett Harrell
  Q: I'm looking to replace the P225-70-16 tires on my 2002 Highlander. i use the car almost exclusively ...
  A: Steve, In most cases a tire designed for the SUV is the better choice. A SUV tire has more ...
DOT numbers7/6/2008Brett Harrell
  Q: This might sound like a dumb question, but here goes anyway. How do you read the DOT code
  A: Jim, Actually this is a frequently asked question. Located after the letters DOT there are a ...
Replacing only one tire AWD vehicle7/6/2008Brett Harrell
  Q: I have an 02 Tribute with the original tires used only in the summer (studs are on 7 mos of the ...
  A: There are several issues to question here. The first is in my opinion the most important. The ...
Mazda Tribute AWD matching tires?7/6/2008Barry Smith
  Q: I have an 02 Tribute with the original tires used only in the summer (studs are on 7 mos of the ...
  A: Sue, You should check with Mazda to be sure, but I believe they will say that in order to protect ...
Replacing Murano front tires with a different brand.7/5/2008Barry Smith
  Q: Is it acceptable to replace my AWD Murano's front tires with a different brand if I match the size ...
  A: Kerry, There are slight and not so slight differences in the diameter of tires - even within the ...
Tire pressure - tire rating vs. owner's manual.7/4/2008Barry Smith
  Q: this question may have come up already, if so I have not found it. I ride a motorbike and the ...
  A: Robert, Did you change tire size? If not, then the pressure listed in the manual is the correct ...
Steering wheel/vehicle vibration7/3/2008Barry Smith
  Q: My kid drove off the road and over a ditch in our 96 Chevy Corsica. The whole tire was wobbling took ...
  A: Nicole, If the tire was woobling, it means it took quite a hit - and the safe thing to do is ...
Pirelli P215 55R 16 97H7/1/2008Barry Smith
  Q: I have 4 of these all season tires and want to confirm best and max tire inflation. Pirelli website ...
  A: Bill, On every vehicle sold in the US, there is a sticker - commonly called the placard - that will ...
Tire load rating6/30/2008Barry Smith
  Q: My wife and I had 4 tires on my 1999 suburban 1500 2 wheel drive vehicle. the tires are P235/75R15 ...
  A: Bart, On every vehicle sold in the US, there is a sticker commonly - called the vehicle placard - ...
Tire Life6/30/2008Barry Smith
  Q: I put 4 General Radials on my 76 Camaro in 1994. The tires have done about 2000 miles total. They ...
  A: Chris, Do a quick google and look for tire aging. You will find many statements that say that ...
tire number question6/29/2008Barry Smith
  Q: I have an ATV. the tire sizes are: 22 x 10 x 9 22 x 12 x7 Could you please explain what each of ...
  A: Ronald, A 22 X 10 - 9 (notice how the size is officialy designated) 22 = Overall diameter in ...
Tire tread wear6/29/2008Barry Smith
  Q: recently i went shopping for a used suv, i found one that fits my budget but the two front tires had ...
  A: Robert, You should be aware that steering tires tend to wear on the shoulders and drive tires tend ...

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