305/75r17 In Inches – Tire Size, Rim Fitment & Best Tires

The 305/75R17 tire has an overall diameter of approximately 34.8 inches, a section width of roughly 12 inches, and is designed to be mounted on a 17-inch diameter rim. The equivalent tire size in the high flotation system is 34.8x12R17.

305 75r17 In Inches

What does 305/75r17 Tire mean?

If tires were secret agents, 305/75r17 would be their code name. Every part of this seemingly cryptic code has a purpose. Let’s break it down in the table below:

Tire NumberIts Explanation
305This is the tire’s width in millimeters. In simpler terms, this is how ‘fat’ your tire is.
75This is the aspect ratio, or the tire’s height-to-width ratio expressed as a percentage. So, this tire’s height is 75% of its width.
RThis “R” stands for Radial, indicating the construction type of the tire. Radial tires have layers of fabric with cords running radially around the tire.
17This is the wheel diameter, which is the size of the wheel the tire is intended to fit, measured in inches.

With that table, we have successfully decoded the secret agent tire. Now, onto translating these metrics into inches, because let’s face it, millimeters and ratios are great for a math quiz, but they’re not the most intuitive when it comes to visualizing tire size.

What is 305/75r17 Tire in inches?

Time to flex our conversion muscles! Remember, 1 inch equals 25.4 millimeters. But don’t worry, I’ve done all the heavy lifting and created a table for you. Keep your calculators in your pockets and feast your eyes on the information below.

Tire DiameterApproximately 34.0864
Section WidthApproximately 12.0305
Rim Diameter17432
Sidewall HeightApproximately 9.0229
CircumferenceApproximately 107.02718
Revolutions per mileApproximately 592592

The diameter is roughly 34 inches, so that’s a big tire. The section width is about 12 inches, giving your vehicle a nice, broad footprint for added stability. The rim diameter is 17 inches, and the sidewall height – the distance from the rim to the tread – is about 9 inches. The tire’s circumference is around 107 inches, meaning it will make approximately 592 revolutions in a mile.

Tire width Of 305/75r17

The 305/75r17, our tire-du-jour, boasts a respectable width of 305 millimeters. That’s about 12 inches of glorious rubber connecting your vehicle with the asphalt below. In layman’s terms, it’s roughly the length of your average foot-long sub, or for those of you with a sweet tooth, approximately three standard-sized chocolate bars lined up. This considerable width provides better vehicle stability and handling, making it the Arnold Schwarzenegger of tires – broad, stable, and ready for action.

Tire height of 305/75r17

The height of the tire, or diameter, is a whopping 34 inches. This is the combined height of the tread on top, the sidewall, and the bead at the bottom. That’s nearly three feet tall or, for a more fun comparison, roughly the same height as an average 3-year-old child! Such height is well-suited for off-roading or vehicles with higher clearances. So, when you’re gliding over bumps or small obstacles, it’s like your vehicle is doing a ballet, making it the Mikhail Baryshnikov of tires!

Sidewall height of 305/75r17

The sidewall height of a 305/75r17 tire is around 9 inches, give or take a few millimeters. To visualize this, it’s just a bit taller than your favorite paperback book standing on its edge. This high sidewall is like the suspension bridge of the tire world, absorbing shocks from potholes, bumps, and curbs. It allows your vehicle to sail smoothly over rough roads, just as a suspension bridge effortlessly supports traffic.

Rim diameter for 305/75r17

As the number 17 in our tire code implies, the rim diameter for a 305/75r17 tire is 17 inches. That’s like the diameter of a medium-sized pizza or about the height of your average two-slice toaster. As for vehicle compatibility, this is a pretty common rim size for many light trucks, SUVs, and larger sedans. It’s the Goldilocks of the rim world – not too big, not too small, but just right!

Tire circumference of 305/75r17

The circumference of our star tire, the 305/75r17, is approximately 107 inches. To put this in perspective, this is approximately the height of an adult male giraffe’s heart off the ground. Yes, you read that correctly. So next time you’re marveling at your tire’s impressive circumference, just remember you’re driving around on the equivalent of four giraffe hearts!

Comparison with similar tires

Alright folks, buckle up! We’re now venturing into the territory of tire comparison – the equivalent of a heavyweight boxing match in the tire world. In the red corner, we have our undisputed champion, the 305/75r17. In the blue corner, we’re putting up two challengers – the 305/70r17 and 305/65r17. Will our champion hold its own? Let’s find out!

305/75r17 vs 305/70r17

At first glance, both tires have the same section width – 305 millimeters. But, the devil is in the details, my friend! The second number, the aspect ratio, is where they diverge. With a 75 aspect ratio, the 305/75r17 has a sidewall height of around 9 inches, whereas the 305/70r17, with its lower 70 aspect ratio, has a sidewall height of about 8.5 inches.

Think of it as the difference between a tall latte and a regular one – the tall one gets you a bit more foam for your coffee, while the regular one will get the job done but with less fluff. If you prefer more ground clearance, and your vehicle can handle it, the 305/75r17 is your ‘tall latte’.

305/75r17 vs 305/65r17

Now, the 305/65r17 enters the ring. Again, the width stays consistent at 305 millimeters, but with an aspect ratio of 65, this tire’s sidewall height is closer to 7.9 inches. This tire is like a small cappuccino – still has enough foam for the coffee purists, but it’s noticeably less than the 305/75r17.

If your ride is more city-oriented and you prefer a smoother driving experience with better fuel efficiency, then the ‘small cappuccino’, or 305/65r17, is your tire of choice.


Comparing tires can be as thrilling as comparing coffee beverages at your favorite café! Much like your coffee preference, the best tire for you ultimately depends on your vehicle’s requirements and your driving conditions. Each has its strengths – the 305/75r17 offers higher ground clearance for off-road adventures, while the 305/70r17 and 305/65r17 might provide a smoother ride and better fuel efficiency for city driving.

As you’ve journeyed through the land of tire sizes with me, I hope you now feel like a seasoned explorer, ready to conquer any tire-related queries that come your way. Whether you’re navigating the rugged terrain of off-roading adventures or the smooth asphalt of city streets, always remember: your tires are more than just rubber – they’re your vehicle’s sole (and soul!). Treat them right, and they’ll take you wherever you want to go. Keep on rolling, and stay pumped!