Yes, and the bigger the tire, the bigger the error. Here's the math on how taller tires throw off your speedometer and odometer, plus how to recalibrate.
View Full Post...
On dry pavement, a smooth tire actually grips better. So why does every street tire have grooves? Here's what tread really does, straight from the shop.
View Full Post...
Three alignment angles, three different jobs. Here's exactly what camber, caster, and toe each control, how they're measured, and which one quietly destroys your tires.
View Full Post...
Tires start out a milky off-white. Carbon black is what turns them black, and it does far more than set the color. Here's the real reason, from the shop.
View Full Post...
You've heard one pound of unsprung weight equals ten of sprung. Is that true? Here's what unsprung weight really is, why it matters, and where the folklore falls apart.
View Full Post...
That original door sticker was written for bias-ply tires, and it's wrong for the radials on your classic today. Here's the PSI to actually run.
View Full Post...
Feathered tread isn't random. It's your alignment leaving evidence. Here's how to read the angle, find the cause, and stop it before the tire's gone.
View Full Post...
That high-pitched screech when you turn or brake isn't always a problem. Here's how to tell a harmless squeal from one that's costing you tires.
View Full Post...
All-terrain vs. all-season tires compared on tread, noise, fuel economy, snow rating, and cost. Dennis breaks down the data to help you choose.
View Full Post...
Can you drive drag slicks on the street? Hank explains why slicks aren't street legal or safe, and the DOT-legal drag radials to run instead.
View Full Post...
How big of a tire can you fit without a lift? Dennis breaks down diameter, width, and offset limits, plus realistic max sizes by platform.
View Full Post...
From low-volume molds to NOS scarcity, Dennis breaks down the five real reasons vintage motorcycle tires carry the prices they do.
View Full Post...
The honest answer isn't a logo. Dennis breaks down the spec-sheet red flags that separate a tire to avoid from a legit value brand.
View Full Post...
Hank busts the tire maintenance myths that drain your wallet without protecting your tires, then tells you what actually keeps rubber on the road.
View Full Post...
A fitment specialist explains which tire wears out fastest and why, broken down by drivetrain, with the physics, the EV factor, and how to fix it.
View Full Post...
A shop owner answers whether you can swap a 235 tire for a 225, with the diameter math, speedometer effect, load rating check, and when not to.
View Full Post...
A fitment specialist breaks down the luxury rim brands worth the premium, from Forgiato and HRE to Asanti, Beyern, and Mandrus, plus what to check.
View Full Post...
The 245 on your sidewall is section width, not the rubber meeting the road. Here's how section width and tread width differ—and which one actually matters.
View Full Post...
Wheel width sets which tire sizes you can safely run. Here's the min/ideal/max fitment chart and the math to match tire to wheel before you buy.
View Full Post...
P-metric or LT? Dennis Feldman explains how the two designations differ in construction, load capacity, and ride feel — plus the towing threshold and use-case math that decides which one your truck actually needs.
View Full Post...
Hank breaks down drag radials for street and strip use — how they work, sizing, the chassis prep that matters, and which tires to actually buy.
View Full Post...
Bolt on a disc brake kit and your 14-inch steelies won't clear the caliper. Hank Feldman explains the clearance math, the bolt-pattern trap, and the wheels that actually fit the most common conversion kits.
View Full Post...
Bigger tires changed your truck's effective gear ratio. Dennis Feldman walks through the math, the by-tire-size chart, the breakpoints where stock gears stop working, and the cost reality of a regear.
View Full Post...
Lug nuts off, wheel won't budge — Hank Feldman walks through why it happens, the six methods to free it without damaging the rim, and the prevention step most shops skip on reinstall.
View Full Post...
A precise fitment chart by lift height and by truck — F-150, Silverado, Tacoma, Wrangler — with the offset, backspacing, and clearance variables that decide what really clears.
View Full Post...
