What Are Redline Tires, and Why Did Every Muscle Car Want Them?

I've been around shop floors and show fields long enough to spot a real muscle car from fifty feet away, and half the time it isn't the paint or the badges that give it away. It's the tires. A thin band of red running around the sidewall tells you everything: this is a car that came up swinging during the horsepower wars, when Detroit was building street cars that could embarrass sports cars twice their price. Folks ask me all the time what those red-striped tires are and whether they can still get a set. The short answer is yes, and the longer answer is a story worth telling.

What Are Redline Tires?

Redline tires are tires with a single thin red stripe running around the outer sidewall, near the shoulder. The red line isn't paint slapped on at the dealership—it's a band of red rubber built into the sidewall when the tire is made, so it wears and ages right along with the rest of the tire. Mechanically, a redline tire is just a tire. The stripe doesn't change how it grips or rolls. What it changes is the attitude. On the right car, that red ring reads as performance the same way a chrome air cleaner or a set of headers does.

The look caught on in the mid-1960s and became shorthand for a certain kind of car: optioned-up, quick, and proud of it. You'll still see redlines today on faithful restorations and on restomods that want the period flavor without giving up modern drivability. Either way, the stripe means the same thing it always did.

How the Red Stripe Was Born

To understand the redline, you have to understand what came before it. For decades the sidewall statement of choice was the whitewall, and early on those white bands were wide—real wide. As the years rolled on the fashion narrowed, the white band shrinking with each model year until the industry settled on a slim 3/8-inch pinstripe whitewall by the early 1960s. If you want the full history of that evolution, our whitewall-width-guide walks through it era by era.

Here's the catch: by 1964 the Big Three were rolling out genuinely fast cars, and a dainty white pinstripe didn't match the snarl under the hood. A plain blackwall looked too cheap. So GM, Ford, and Chrysler borrowed a trick from the British sports car crowd and ran a colored stripe instead of a white one. Red was bold, it was aggressive, and it photographed beautifully in the brochures. The redline tire was born, and it landed at exactly the right moment in the muscle car timeline.

Why Muscle Cars Wore Redlines From the Factory

Redlines weren't usually the base tire. More often they showed up as factory equipment on the performance side of the order sheet—the cars that came with the bigger engine, upgraded suspension, front disc brakes, or a named sport package. A buyer who was already paying for muscle wanted the car to look the part, and the stripe did that work for free.

That's why, to this day, putting a correct set of redlines on a restored muscle car matters so much at shows and at auction. Authenticity sells. Judges and buyers notice when a car wears the rolling stock it left the factory on, right down to the sidewall treatment. A car sitting on the proper tires and a period-correct wheel—think a Magnum 500 or a styled steel—simply reads as the real deal. If you're chasing that look, our rundown of classic-car-wheel-styles pairs nicely with a set of redlines.

Redline, Goldline, Blueline: The Colored-Sidewall Family

Once the red stripe proved it could sell cars, the manufacturers started experimenting with other colors, and that's where goldline and blueline tires come from. They're the same idea—a colored band built into the sidewall—just dressed in a different shade.

Gold pinstripes turned up on Chevrolet's 1965 and 1966 Corvettes, sized at 7.75-15 and aimed mainly at the big-block cars running knockoff wheels. Blue pinstripes showed up as well on various applications. Today you can still get all three colors—red, gold, and blue—in sizes built to match factory specs, so if you're restoring something that wore a goldline from the factory, you don't have to fake it with a redline and hope nobody notices.

The colored stripe wasn't the end of the line, either. As the 1970s arrived, sidewall fashion shifted again toward raised white lettering, which carried the aggressive look into the next decade. If that's more your car's era, here's how to mount them correctly: raised-white-letter-tires-which-way-face.

Bias Ply vs. Radial Redlines

Here's the question I get more than any other once somebody decides they want redlines: bias ply or radial? It's the single biggest decision you'll make, and it comes down to what you're building.

Bias-ply redlines replicate the original factory construction and sidewall profile—the tall, slightly rounded look that was correct in the 1960s. If you're doing a numbers-matching restoration and you want the car to be right, bias ply is the authentic choice. Radial redlines wear the exact same red stripe but use modern internal construction, which gives you a flatter contact patch, better manners on the highway, and a ride that won't wander all over the lane on a long drive. You give up a touch of period correctness; you gain a car you'll actually enjoy driving.

Neither is wrong—they just answer different questions. We dig into the handling and ride differences in our guide on the bias-look-radial-tires, which is worth a read before you spend the money. Here's the short version:

Feature	Bias-Ply Redline	Radial Redline
Authenticity	Period-correct profile and construction	Correct stripe, modern build
Ride Quality	Vintage feel, more sidewall flex	Smoother, more composed
Highway Manners	More steering input needed	Tracks straighter, less wander
Best For	Show cars and concours restorations	Drivers and weekend cruisers

Redline Tire Sizes and Fitment

The wrinkle with vintage rolling stock is that the size on an old sidewall doesn't read like a modern tire. The 1960s used numeric and alpha-numeric sizing—numbers like 7.75-15 or codes like F70-14—rather than the metric format you see on a new car today. That trips up a lot of first-time buyers who try to cross-shop a redline against their daily driver's tire and come up confused.

Before you order, figure out what your car actually calls for and how that old size translates. Our antique-tire-sizes-decoded guide breaks down how to read those old markings and match them to what's available now. The good news is that the popular muscle car sizes are well covered in redline, so once you know your number, finding the tire is the easy part. When in doubt, give my team a call before you buy—getting the size right the first time beats sending a set back.

Are Redline Tires Still Made? What to Buy

Yes—redline tires are very much still made, and the selection today is better than it's been in years thanks to the restoration boom. You've got real choices across bias ply and radial, and across all three sidewall colors. Here's where I'd point you:

On the bias-ply side, the BFGoodrich Silvertown Redline is about as authentic as it gets for a '60s muscle car, with the correct profile and that unmistakable stripe. BFGoodrich also offers the Silvertown in goldline and blueline if your car wore something other than red, and you can browse the full lineup over on the BFGoodrich_Tires page.

If you'd rather drive the car hard and often, look at radial redlines like the American Classic Redline Radial or the Coker Redline Classic Radial—same look, modern road manners. The folks at Coker built their reputation on this exact corner of the hobby, and you can see what's available on our Coker_Tires page. And here's a newer trick worth knowing: Diamond Back takes a modern performance radial and applies a redline to the sidewall, so you can run a contemporary tire that still nods to the era—great for a restomod that needs real grip. The whole collector range lives on our Classic_Tires page.

How to Choose: Show Car or Daily Driver

When somebody can't decide, I ask one question: what's the car for? If it's a trailer queen or a numbers-matching restoration headed for the show field, go bias ply in the correct color and don't look back—the authenticity is the whole point, and judges reward it. If it's a car you plan to actually drive, on real roads, at real speeds, go radial. You'll keep the look that turns heads in the parking lot and gain a car that's a pleasure on the way there.

The middle ground is the restomod crowd: modern brakes, modern suspension, maybe a crate motor, but a body that still says 1969. For that build, a radial redline—or one of those Diamond Back modern radials with a stripe—gives you the best of both worlds. Match it to a clean period wheel and you've got a car that looks right and drives like it was built this decade.

Conclusion

Redline tires aren't a gimmick and they never were. They're a piece of automotive history you can still bolt onto your car, a stripe that earned its meaning during the best years Detroit ever had. Whether you want bias ply for a faithful restoration or a radial for a car you'll drive every weekend, the tire is out there waiting for you. Get the size right, pick your construction, and let that red line do the talking. If you're not sure which way to go, that's exactly what my crew is here for—we've been fitting these things to muscle cars for a long time.

Key Takeaways

• Redline tires have a red stripe molded into the sidewall and became the signature look of mid-1960s through early-1970s American muscle cars.
• The stripe replaced the narrow whitewall to give performance cars a more aggressive look, often as factory equipment on optioned-up models.
• Goldline and blueline tires are the same idea in different colors—gold appeared on 1965–66 Corvettes, and all three colors are still available today.
• Bias-ply redlines are the authentic choice for show cars; radial redlines keep the look but ride and track far better for drivers.
• Vintage sizes read differently than modern tires, so confirm your size before buying—our decoding guide and our team can both help.