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Search: Posts Made By: Tireman9
Forum: Tires, Tires, Tires! 04-12-2024, 07:39 AM
Replies: 18
Views: 898
Posted By Tireman9
All TPMS are similar. As a Tire Design Engineer...

All TPMS are similar.
As a Tire Design Engineer and after running the ONLY direct comparison of two different type (internal vs external) and 2 different brand TPMS I can suggest.


1. Be sure...
Forum: Tires, Tires, Tires! 04-07-2024, 07:57 AM
Replies: 36
Views: 2,145
Posted By Tireman9
Were the GY of "6 years ago" The Marathon or...

Were the GY of "6 years ago" The Marathon or Endurance design. MAJOR difference and important fact.
Forum: Tires, Tires, Tires! 04-07-2024, 07:50 AM
Replies: 36
Views: 2,145
Posted By Tireman9
Why did the tire fail? Do you have pictures of...

Why did the tire fail? Do you have pictures of the failed tire to help us possibly identify the reason.


Have you filed a complaint with DOT NHTSA? They will need to know the RV Vin number and...
Forum: Towing 03-31-2024, 09:08 AM
Replies: 49
Views: 3,011
Posted By Tireman9
While it is possible to "pull" an RV trailer well...

While it is possible to "pull" an RV trailer well over 75 mph it certainly is not smart or safe to do so. I never hear anyone ask about stopping distance with an RV.
Also few realize that the load...
Forum: Fifth Wheels 02-18-2024, 08:54 AM
Replies: 22
Views: 2,118
Posted By Tireman9
As an actual Tire Design Engineer... 1. Not...

As an actual Tire Design Engineer...

1. Not sure why your inflation has been at 80 psi as someone incorrectly set it to 80


2. The correct cold inflation should be the PSI shown on your...
Forum: Toy Haulers 01-11-2024, 03:48 PM
Replies: 18
Views: 1,644
Posted By Tireman9
Unless you are measuring tread temperature with a...

Unless you are measuring tread temperature with a needle probe at the belt edges, taken within the 1st 10 to 20 seconds of stopping I would not trust your numbers. This is based on my work with some...
Forum: Toy Haulers 01-11-2024, 12:09 PM
Replies: 18
Views: 1,644
Posted By Tireman9
"Duals" means 2 tires, side by side on each end...

"Duals" means 2 tires, side by side on each end of an axle as with many 1-ton Pick-ups
"Tandem" means two axles with one tire on each end of each axle of a tow-able



To me a "Toy-hauler" is...
Forum: Tires, Tires, Tires! 10-22-2023, 05:22 PM
Replies: 33
Views: 5,538
Posted By Tireman9
People need to understand that ST type tires as...

People need to understand that ST type tires as used on RV trailers are unique to the US Market as US Tire & Rim Assoc is the only tire org that has this application. The rest of the world would...
Forum: Tires, Tires, Tires! 09-28-2023, 03:11 PM
Replies: 10
Views: 3,213
Posted By Tireman9
Sorry but the OP was asking about "tread depth"...

Sorry but the OP was asking about "tread depth" not the "Ply". Tire warranty reimbursement are usually based on the amount of tread that was worn off, hence the tire company calculated the percent...
Forum: Tires, Tires, Tires! 09-28-2023, 11:47 AM
Replies: 10
Views: 3,213
Posted By Tireman9
You can measure the depth on the tread of the...

You can measure the depth on the tread of the tire in top picture as there is a section of tread visible. While pictures are not the best (too far away & slight out of focus) I am 100% certain the...
Forum: Tires, Tires, Tires! 08-25-2023, 04:33 PM
Replies: 7
Views: 1,237
Posted By Tireman9
OK Just post the numbers as answers to my...

OK Just post the numbers as answers to my questions #1 -#8
Forum: Tires, Tires, Tires! 08-13-2023, 08:39 AM
Replies: 33
Views: 5,538
Posted By Tireman9
tires

What ever you get be sure their load capacity is equal og greater than the spec for the OE tires as found on the RV Certification Label.
Forum: Tires, Tires, Tires! 08-09-2023, 08:15 PM
Replies: 41
Views: 5,359
Posted By Tireman9
I suspect that if the "tire guy" isn't a fan,...

I suspect that if the "tire guy" isn't a fan, what that really means is he can't make as much selling GY as he can selling other brands.


Np matter what brand you select As an Tire Design...
Forum: Tires, Tires, Tires! 08-09-2023, 08:11 PM
Replies: 7
Views: 1,237
Posted By Tireman9
Tire questions

As an actual Tire Design Engineer (Ret) and RV owner I monitor this and other RV forums and try and answer questions based on my 50+ years experience. It would make my job easier if you could...
Forum: Keystone Questions 06-11-2023, 09:54 AM
Replies: 35
Views: 6,371
Posted By Tireman9
Where do you have access to 12v in the trailer...

Where do you have access to 12v in the trailer when driving. Some folks mount inside the battery box (keep it dry). The repeater will be 8 to 10' closer and that should be enough.
Forum: Keystone Questions 06-11-2023, 09:52 AM
Replies: 35
Views: 6,371
Posted By Tireman9
That is the downside of buying from a place that...

That is the downside of buying from a place that just sells lots of stuff rather than from people that work with and support the RV community like TST or TechnoRV or TireMinder or Tiretraker.


I...
Forum: Keystone Questions 05-07-2023, 07:34 AM
Replies: 35
Views: 6,371
Posted By Tireman9
Tpms

As a tire Design engineer I consider TPMS a MUST HAVE.


I have been running TireTraker since 2009. I am the only person I know of that is running a direct comparison of 2 different brands ...
Forum: Tires, Tires, Tires! 04-29-2023, 10:44 AM
Replies: 34
Views: 9,663
Posted By Tireman9
Tire failures

Suggest you read THIS (https://www.keystoneforums.com/forums/showthread.php?t=35148&highlight=tires+fail) post if you want facts from an actual tire design engineer.


...
Forum: Keystone Questions 02-24-2023, 08:44 PM
Replies: 73
Views: 23,956
Posted By Tireman9
.not enough information to give an informed...

.not enough information to give an informed answer.
Forum: Keystone Questions 02-24-2023, 02:02 PM
Replies: 73
Views: 23,956
Posted By Tireman9
Interesting. I thought the Federal Trade...

Interesting. I thought the Federal Trade Commission responded to complaints on low cost Passenger car tires being "Dumped" into the US market in years prior to 2016 and the FTC response was to apply...
Forum: Keystone Questions 02-23-2023, 11:38 AM
Replies: 73
Views: 23,956
Posted By Tireman9
Tire info missing

I have decided to not add to the confusion but to use this thread as an example of how NOT to get the correct info on tire loading & inflation.


If you have a question on inflation the following...
Forum: Tires, Tires, Tires! 12-11-2022, 01:42 PM
Replies: 13
Views: 7,407
Posted By Tireman9
As an actual tire design engineer, I like what...

As an actual tire design engineer, I like what JRTJH (https://www.keystoneforums.com/forums/member.php?u=2565) said and agree with his suggestions.



CWThe mag is generally correct but the...
Forum: Towing 11-13-2022, 02:22 PM
Replies: 35
Views: 14,383
Posted By Tireman9
snip (------------------ Steer Axle...

snip

(------------------ Steer Axle ---Drive Axle --- Trailer
Weight #1 - Truck only/hitch/bars -- 3180 3520 (exceeds 6500 GVWR)
Weight #2 - Both with WDH bars -- 2980 ...
Forum: Towing 11-13-2022, 11:34 AM
Replies: 35
Views: 14,383
Posted By Tireman9
Tire info

Tire info comments from a tire engineer.

TV Tire size, type and inflation should go by the Certification Sticker on the driver door jam. This was established by a team of tire and vehicle...
Forum: Lite Weight Trailers 11-02-2022, 10:46 AM
Replies: 27
Views: 8,746
Posted By Tireman9
That wear difference is to be expected with...

That wear difference is to be expected with radials getting 2x to 3x the wear of Bias.
Showing results 1 to 25 of 457

 
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