Racing Tires: There are many kinds of racing. When someone invents a vehicle or a way for humans to compete against each other, they create a race around that! I’ve posted some photos of racing events that use tires. Usually we don’t think of those tires as “Racing Tires”. Yet, each of those has tires […]

RunFlat Tires First, nomenclature: I am going to discuss tires that don’t need internal air pressure to operate. To ensure I am clear, I am going to reference those tires using the term “RunFlat” (notice the lack of a space and the Caps!). I am going to use the term “run flat” to mean tires […]

Barry talks about HL tires – tires that were designed with additional load carrying capacity compared to regular passenger car tires. The intention was to provide a way for car manufacturers to avoid tire packaging issues on EV’s. HL Tires This article is being written in July, 2022. The first HL tires just came on […]

Low Profile vs High Profile Tires: This article was prompted by a YouTube video on the same subject that was ……..ah …….. Let’s just say I thought I could do a better job. But let me start by saying, the variability within a given size is quite large – so large that tires on the extremes could be the reverse […]

TRX Tires By the late 1970’s, the transition from bias ply tires to radials was more or less complete. The typical aspect ratios were 80, 78, and 75, with 70 series considered low profile. It was known that the lower the aspect ratio, the better the handling, but the worse the ride. The TRX was […]

This article is going to compare bias ply tires with radials. While I will be referencing passenger car tires, the comparison would apply to any type of tire. There’s a summary at the bottom of the page, but read the introductory paragraphs first. They explain how I am organizing this. Everyone needs to be aware […]

Other Types of Tires: This website has been talking almost exclusively about passenger car tires. Occasionally, I will talk about Light Truck tires. In this article, I am going to address the other kinds of tires. Just for reference, I am going to follow the order tire standardizing organizations follow (and – YES! – they […]

Key Takeaways Definitions When I use the term “EV”, I mean “BEV”—Battery Electric Vehicle—that is, vehicles which only have an electric motor for propulsion. Peculiarities of EVs There are a number of things peculiar about EVs: I’m going to take each of these individually. Range Where tires play a role here is in rolling resistance. […]

This article is about Winter and All Weather tires. It includes information about the tests involved. Winter and All Weather Tires: Updated Apr, 2024 In the Apr 8, 2024 issue of Tire Business, a trade newspaper for the tire industry, there was an article indicating that “The Wheel Group”, a company in California which distributes […]

This article is about travel trailers (RV’s) that have ST type tires. Other kinds of trailers or other types of tires on RV trailers are not specifically addressed here. HOWEVER, if you have a trailer of any sort you may find the information of value Tips for ST tires: When I originally published this webpage, […]

DO NOT MOUNT A 16″ TIRE ON A 16.5″ RIM! DO NOT USE MORE THAN 40 PSI WHEN SEATING A BEAD! Serious injury or death may result for failure to follow the above instructions. Here’s the full warning: RMA Warning about 16.5″ Tires I’ve started this web page with a warning. This is such a dangerous issue that it […]

Original Equipment tires are tires that are supplied to the vehicle manufacturer’s assembly plant. These tires would be the ones on the vehicle when it comes off the end of the assembly line. This would include the spare – whether it is a minispare, donut, fullsized temporary, or regular tire. Throughout the rest of this […]