Back to all

Upsizing Wheels and Tires With Tuffy Tire & Auto Service Westerville

January 14, 2024

Many Westerville drivers want to accessorize their vehicle - you know, make it theirs. One of the easiest ways to get a custom look is to get some new wheels. There are thousands of wheel designs at Westerville area tire shops to get you the look you want. And for many Westerville drivers, that look includes bigger wheels. It used to be that cars came from the factory with 15 or 16 inch wheels. Now 16, 17 and even 18 inchers are standard. And the factories are offering optional wheel packages up to 20 inches or more.

So let's talk about what to consider when you want to upsize your wheels. It's not exactly a DIY project, so you need to know a thing or two before you get started. The most important term to know is rolling diameter. The rolling diameter is simply the overall height of your tire. Unless you want to modify your vehicle suspension, you'll want to keep your rolling diameter the same when you upsize your wheels.

Let's think about those three golden doughnuts in front of you. They're all about the same size. So if we pretend they're tires, they would have the same rolling diameter. The doughnut hole is the size of the wheel. Now pretend we've made the hole bigger on some. That's like having a bigger wheel - but the rolling diameter is the same.

It's important to keep the rolling diameter the same for several reasons. First of all, if the tire is bigger, it might not fit in the vehicle wheel well. Next the speedometer, odometer and anti-lock brake system are all calibrated for the factory rolling diameter. In order for your anti-lock brakes to work properly, the rolling diameter must stay within 3% of the factory recommendation. If you ignore that, you run the risk that your anti-lock brakes won't work properly.

Some have vehicles with electronically-controlled suspension that will be negatively affected by changing the rolling diameter. Let's think about the doughnuts again. You see, as the size of the wheel gets bigger, the sidewall gets shorter. The tire holds less air, so the sidewalls are made stiffer to compensate.

Low profile tires from top manufacturers use special compounds that give the sidewall the strength it needs without compromising ride quality. As you increase your wheel size, you'll typically get a slightly wider tire. This means that you have a larger contact patch. The contact patch is part of the tire that contacts the road. Because there's more rubber on the road, the vehicle will handle better. And braking distances will be shorter. A lot of Westerville folks with trucks or SUVs love the extra control.

Ohio drivers need to watch out that the contact patch isn't so big that the tires rub in turns or over bumps. What we're talking about here is fitment. Your tire professional at Tuffy Tire & Auto Service Westerville can help you get this right. He'll install your new wheels, add spacers if needed to make sure your brakes fit inside your new wheels and get you rolling.

Also, if you drive off-road in Ohio a lot, you may need a higher profile tire to protect your new rims. And make sure your new tires have the load rating you need if you tow a trailer or haul heavy loads. Again, your tire professional at Tuffy Tire & Auto Service Westerville knows how to help.

And don't forget about tire pressure. If you have larger rims, your new tires will hold less air and they'll need to run a slightly higher pressure. Forget that and you'll wear your tires out fast. Finally, get an alignment at Tuffy Tire & Auto Service Westerville after you get your new shoes. 

Stop by Tuffy Tire & Auto Service Westerville to learn more about how you might upsize your wheels or tires.

You'll find us at:

Tuffy Tire & Auto Service Westerville
7128 State Route 3
Westerville, Ohio 43082
614-818-9036
http://www.tuffywesterville.com

 

More articles from Tuffy Westerville

Winter Watch List (Winter Maintenance Items)

January 26, 2025

Don't love winter weather? Here's a list of four things you need to keep a watch on during the winter months. Let's start with coolant levels. Coolant is as important in cold weather as it is in hot weather. Think of the term "anti-freeze." Your coolant needs to be adjusted for climate and temp... More

Bad Vibes (Disc brake rotor problems)

January 19, 2025

If you were to name the most important safety feature on your vehicle right now, what would your answer be? A lot of driving experts would agree that its your brakes. Most newer vehicles use a well-engineered and efficient style of brakes called disc brakes. The name disc brakes comes from one ... More

Getting Off to a Running Start (Starter Replacement)

January 12, 2025

When you start your vehicles engine, theres another motor that makes that whole process possible. Its called the starter, and its a small electric motor that gets your vehicle running. As you can imagine, its quite a chore for a little electric motor to turn over the big engine that powers you... More