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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 probably 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

incorrect tire load / danger10/14/2008Barry Smith
  Q: i just got new tires. the car was riding rough. someone said to check the inside of the door to ...
  A: Kim, This is dangerous and could lead to a load related tire failure - which sometimes has tragic ...
cupping on tires10/13/2008Barry Smith
  Q: I have a 2002 Audi A4 all wheel drive and it is certified used car. When i purcased the car the ...
  A: Nate, There are several tests to tell if they are bad: 1) Bounce test: Step on the bumper and ...
tyre size10/13/2008Barry Smith
  Q: I drive a 97 Ford Taurus standard tire size 205/65/15 I have been told to fit 215/60/15 and that ...
  A: Martin, Here's a tire calculator to help with the diameter question. ...
Goodyear missing DOT code10/12/2008Barry Smith
  Q: I just had 4 new Goodyear Assurance TripleTred tires put on by my local garage. When checking for ...
  A: Peter, The date code only has to appear on one side, so look on the other side. DOT codes are a 10 ...
Goodyear Eagle RSA10/11/2008Barry Smith
  Q: Barry, i hope you can help me, i have bought tyres and here in the middle east they can be suspect ...
  A: Mike, Look on the other side. The Date Code is only required on one side. DOT codes are a 10 to ...
Heavy recreational trailer10/10/2008Barry Smith
  Q: I have a horse/recreational trailer that weighs about 20-25 fully loaded. I have G rated tires on it ...
  A: Carl, First, I think the GVW of the trailer is supposed to be when it is fully finished (and fully ...
Tire size10/9/2008Barry Smith
  Q: What is the equal tire from a 6:00 X 14" to a 15" in todays tire size thanks Jerry ANSWER: Jerry, ...
  A: Jerry, Thanks for the info. I was afraid that the 6.00-14 might have been a honest to goodness ...
Directional Tires10/9/2008Barry Smith
  Q: Sinlge directional tires. Is there such a thing? Well I think I may have these tires on my car. The ...
  A: John, Directional tires will have an arrow on the sidewall pointing in the direction of rotation. ...
Fuel efficient tires10/9/2008Barry Smith
  Q: Is there much difference in fuel effieiency of different tires and which are the best?
  A: Merle, There are differences between tires in regards to fuel consumption. Here's a piece on the ...
Heavy recreational trailer10/9/2008Barry Smith
  Q: I have a horse/recreational trailer that weighs about 20-25 fully loaded. I have G rated tires on it ...
  A: Carl, I assume that 20 to 25 means 20,000# to 25,000 pounds. That's quite a range. So I suggest ...
Tire size10/8/2008Barry Smith
  Q: What will happen if I put P255/70R/16 on a 95Chevy 3/4 ton truck? It has P265/70R16 on it now.
  A: LeaAnna, On every vehicle sold in the US, there is a sticker - commonly called the placard - that ...
OEM Age specifications for tires10/7/2008Barry Smith
  Q: Do you happen to know what the car manufacturers specify or recommend as to the maximum age of a ...
  A: Roxanna, Vehicle manufacturers only have a specification for the age of tires that arrive at their ...
China RV Tire 8R19.510/7/2008Barry Smith
  Q: Had two blow outs on one trip. Found tire without DOT knowledge, and it was made in china and had ...
  A: Ron, I don't think you captured the DOT Code. DOT codes are a 10 to 12 digit number located near ...
truck loan capacities10/7/2008Barry Smith
  Q: Barry, we have a 2000 F350 with standard 16" tires. We carry a 4100# (wet) 2007 Lance Camper and ...
  A: NJK, Your first step ought to be to call Ford and find ought what the load capacity and the towing ...
date codes on Assurance comfort tread10/6/2008Barry Smith
  Q: I thought I knew how to read the date codes, but find I am a dummy this time. I just had four of the ...
  A: Ken, Yup, I can help. Look on the other side. The date code only has to appear on one side. DOT ...
Tire size10/6/2008Barry Smith
  Q: What is the equal tire from a 6:00 X 14" to a 15" in todays tire size thanks Jerry
  A: Jerry, You should be aware that a 6.00-14 was a pretty small tire even for the time. Going up in ...
Goodyear Wrangler10/6/2008Barry Smith
  Q: Last Fall I had Goodyear Wrangler tires installed on my 2002 Excursion. One tire will not balance. I ...
  A: Tom, Try looking on the other side of the tire. The Date Code is only required on one side. But ...
quite tires10/5/2008Barry Smith
  Q: I recently bought a 2001 honda accord sedan it came with low profile tires it looks sharp but the ...
  A: Frank, This is a common problem with low profile tires and there isn't much you can do except to ...
Different tires on the front and rear.10/5/2008Barry Smith
  Q: I want to put new 17-inch tires on a 1987 Buick Grand National, with wider ones on the rear. I can ...
  A: Rick, Obviously the best situation is to have 4 of the same tire on the car. Having a mix of ...
dealer swapped tires?10/4/2008Barry Smith
  Q: My fiance recently took her car into the dealership to have an oil change and tire rotation ...
  A: Brian, There are bits and pieces of information that are either missing or do not make sense. So ...
mounting 22" tires on a 22.5" wheels10/4/2008Barry Smith
  Q: I currently have 22.5" wheels/tires on my dually pickup & was wondering if 22" tires will fit on the ...
  A: Jason, DO NOT - repeat - DO NOT mount 22" tires on 22.5" rims. The rim diameter is the rim ...
psi10/3/2008Barry Smith
  Q: Please give me the correct psi for a Goodyear Viva 2 P215/70R15. I have two on the front of my ...
  A: Angela, On every vehicle sold in the US, there is a sticker – commonly called the tire placard - ...
Tires pressure10/2/2008Barry Smith
  Q: today I bought a set of tires Cooper ATR discoverer 265/70 R18 filled to 36PSI 260KPA ,frankly I'm ...
  A: Lamine, On every vehicle sold in the US, there is a sticker - commonly called the placard - that ...
"V" & "H" ratings10/2/2008Barry Smith
  Q: What is the difference in tires with the H & V ratings? Is the V actually worth the additional ...
  A: Esther, You've no doubt read up on the difference in the speed ratings. If not read this: ...
RV tires10/1/2008Barry Smith
  Q: I have a 32ft fifth-wheel camper/trailer with two axles. Weight is probaly 9,500 lbs. Tires are 15 ...
  A: Chuck, This is a vehicle issue. Tires do not wear unevenly unless the alignment is off. So you ...
Tires for an electric S10 pickup10/1/2008Barry Smith
  Q: Barry -- I have converted a 2002 Chevy S10 shortbed pickup to all-electric power. Specifically: I ...
  A: Steve, I’m going to make a number of assumption and they ought to be obvious as I go along. The ...
Tire Pressure Confusion10/1/2008Barry Smith
  Q: I'm confused. My car manual tells me that Toyota recommends 60 psi for the tires in my Corrola, but ...
  A: Alex, On every vehicle sold in the US, there is a sticker - commonly called the placard - that will ...
Replacement for OEM Tires9/30/2008Barry Smith
  Q: Re: 1997 Geo Tracker - 4-door - 4WD automatic, with manual locking front hubs The original tires on ...
  A: Wayne, First, you should never find yourself in a position where you have to replace only 2 tires ...
tire noise/searching9/30/2008Barry Smith
  Q: .. I just purchased a 2009 Prius with the touring option, which came with Bridgestone ...
  A: Dennis, Is the only time this happens is when the pavement has grooves in it? If so, you have ...
Tires for an electric S10 pickup9/30/2008Barry Smith
  Q: Barry -- I have converted a 2002 Chevy S10 shortbed pickup to all-electric power. Specifically: I ...
  A: Steve, Thanks for the information, but before I can answer your questions I need to get some more ...
Tire Pressure9/29/2008Barry Smith
  Q: I have 16' Lamar dump bed trailer. I can't find and placard. It has 10.00lb tandem axles. It came ...
  A: Albert, Let's assume that the 2 10,000# axles are needed as well as 4 tires, whose load carrying ...
Tire noise9/29/2008Barry Smith
  Q: I just had the front end aligned and tires rotated. The front tires had a fair amount of wear mostly ...
  A: Sue, What you have is irregular wear. Irregular wear is caused by misalignment and aggravated by ...
tires and fuel efficiency9/28/2008Barry Smith
  Q: For safety reasons, I am writing for my 7th grade kid. He has to come up with a science project. He ...
  A: Irene, Tires are tested for rolling resistance using a machine dedicated to that purpose. There ...
Tires for an electric S10 pickup9/28/2008Barry Smith
  Q: Barry -- I have converted a 2002 Chevy S10 shortbed pickup to all-electric power. Specifically: I ...
  A: Steve, On every vehicle sold in the US, there is a sticker – commonly called the vehicle placard - ...
new rims for bmw9/26/2008Brett Harrell
  Q: So i got new rims for my 335xi today and after i left the place i got on the highway and as i was ...
  A: I suspect the problem is in the balancing. Most BMW's have wheel bolts instead of lug nuts. Many ...
2005 dodge power wagon tires9/25/2008Brett Harrell
  Q: i have a 2005 dodge 2500 power wagon quad cab 4x4. i want to know if i can fit 315/70-r17 tires on ...
  A: Darren, As for height, you should not have any problems. I have seen where some Dodges do have ...
tires9/25/2008Barry Smith
  Q: what does it mean when the says the belt is gone on the inside of tire and what can happen if not ...
  A: Hope, This does not make sense. Belts on a tire do not just disappear and they aren't replaced. ...
Crossover/SUV tires...9/25/2008Brett Harrell
  Q: Looking to replace the OEM Hankooks on my FWD 2007 Ford Edge P235/65/17; I live in Wisconsin, & need ...
  A: Freddy, I can give several reasons for not recommending Michelin. My biggest complaint with ...
Geo Metro Rims/Tires9/24/2008Brett Harrell
  Q: I have a '93 Metro (the three door with a 5 speed) and it came with 12" rims and 155R12 tires, this ...
  A: Cotton, The rims will not interchange. In '93 the Metro was by Geo although it's a Chevrolet ...
New Tires for 4Runner9/24/2008Brett Harrell
  Q: The tread is almost gone on my Stampede AT's that I've had to put up with for 30,000 miles. What's a ...
  A: Juliet, I must remind you that your tires must be rotated every 3,500-5,000 miles regardless of ...

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