I need to know about tire size.

I got a flat tire. Is it safe to change the tire size from its stock size, 195/60R15, to a different size, 205/65R15? I don't have money to buy a new tire but I have a spare set of a different size. So, as long as it is safe I want to switch all of my current tires, which are stock sized, to the spare set I have, not the stock size.

My car has 160000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
If you are wanting to change all the tires to a different size then I would recommend putting the replacement next to the correct tire to see the difference in height and width of the tire. You will see that the tire you want to install is a lot larger of tire than what you had. It is not advisable to install an incorrect tire size on the vehicle. You may want to try and trade them in for the correct size tire for your car. The incorrect tire may rub on the fenders and effect the steering and handling of the vehicle. It will also cause the speedometer to not be accurate and transmission to not shift correctly.

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Hyundai Elantra Tyres

Hyundai Elantra wears tyres of 205/60 R16 size.

Find the information in your vehicle owner`s manual in the glove compartment or on the tire information sticker on your driver`s side door. Usually those elements contain all the information related to your tire size and specifications as well as the appropriate tire pressure.
Tires of size 225/45R17 91W for the Hyundai Elantra GLS 2018.
Depending on its year model and trim level, the Hyundai Elantra typically comes with a range of wheel sizes, including 15-inch rims, 16-inch rims, 17-inch rims and 18-inch rims.
Tires usually come in the following widths (in inches): 8, 10, 12, 13, 14, 15, 17, 18, 19, 20, 22, 23, 24, 26, and 28. Tires in these sizes are typically found on most passenger cars, light-duty light trucks, SUVs, minivans, and vans. Tires with a rim diameter measured in inches are called “inch rim” sizes.
You can also find your vehicle`s trim and tire size by VIN, or vehicle identification number. You can then use a VIN decoder tool to find the trim level of your vehicle.
if it`s a 4-cylinder, a manual transmission, or has plain wheels, it`s a GL, though V6, automatic, and alloys were available options (all standard on GLS). something to start w/ anyway. 21 people think this is helpful. thanks david7989!
The Elantra is considered a compact vehicle, and in terms of wheelbase, cargo volume, and size, it`s smaller than the Sonata.
The recommended tire pressure for a Hyundai Elantra is 33 pounds per square inch (PSI) for both front and rear tires.
All of the available Elantra models are made with front-wheel drive.
Wheel diameter is referred to in inches. Diameter of the `rim` in inches (excluding the tyre). Standard road cars generally have wheels that are between 14 inch and 19 inch in diameter.
Tire pressure between 32 to 35 PSI is most suitable for most vehicles. However, one can go as low as 20 PSI (although that is not recommended). Anything below 20 PSI is considered a flat tire. PSI stands for Pounds per Square Inch.
Most passenger cars` psi requirement will be between 30 to 35 psi, but several vehicles fall outside of that range and every vehicle will have specific requirements. Good tire air pressure ensures that tires wear evenly, provide a smooth ride, and increase fuel efficiency.
Once you choose a tire size for your vehicle, you`ll want to stick with that size when you buy replacements. The reason for this is that a differently sized tire can confuse your speedometer and even cause damage to your vehicle`s anti-lock braking systems and stability system calibrations.
“Using “matched” tires means all four tires are the same brand, design and tread depth. Mixing tire brands, tread designs and tread depths may cause components in the vehicle`s driveline to fail.” This necessitates that four-wheel drive and all-wheel drive vehicles use tires that are very closely matched.
B: TIRE WIDTH The three-digit number following the letter is the tire`s width (from side to side, looking at the tire head on) in millimeters. This may also be referred to as the section width. C: ASPECT RATIO The forward slash separates the tire width number from the two-digit aspect ratio.
Size of the wheel

After the letter R, a number that indicates the wheel size where it fits. So for the example, P225/45R17 91V, R17 means the tire is made of radial-ply construction and that it fits a 17-inch rim.

The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire`s width. The bigger the aspect ratio, the bigger the tire`s sidewall will be.
The 2023 Hyundai Elantra is a great entry in the compact car class.
The Hyundai Elantra, also known as the Hyundai Avante (Korean: 현대 아반떼), is a compact car produced by the South Korean manufacturer Hyundai since 1990.
Engine, Transmission, and Performance

The standard nonhybrid Elantra powertrain is a naturally aspirated 2.0-liter four-cylinder engine that pushes out a not-very-exciting 147 horsepower and 132 pound-feet of torque under the hood of SE and SEL models.

How long do a Hyundai Elantra`s tires last? Assuming you drive safely and average 12,000-15,000 miles a year, the tread on a set of four tires will wear out in about three years. It could be shorter if your annual mileage is over 12,000 or longer if your average annual mileage is under 12,000.
Most passenger cars will recommend 32 psi to 35 psi in the tires when they`re cold. The reason you check tire pressure when they`re cold is that as tires roll along the road, friction between them and the road generates heat, increasing both the temperature and the air pressure.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I need to know about tire size.
ANSWER : If you are wanting to change all the tires to a different size then I would recommend putting the replacement next to the correct tire to see the difference in height and width of the tire. You will see that the tire you want to install is a lot larger of tire than what you had. It is not advisable to install an incorrect tire size on the vehicle. You may want to try and trade them in for the correct size tire for your car. The incorrect tire may rub on the fenders and effect the steering and handling of the vehicle. It will also cause the speedometer to not be accurate and transmission to not shift correctly.

Advice for winter tires
ANSWER : 205/55R17 may be too tall for your vehicle. A couple of good sources to check size compatibility for your vehicle would be tirerack.com or maybe discounttire.com. Sites like Tire Rack specialize in winter tire packages and is a good source for fitment options. I have personally used Bridgestone and Dunlop snow tires and would recommend either. However, it is highly recommended that winter tires be mounted at all 4 corners. Having different tires with different capabilities not only makes the vehicle unstable, it will effect systems like the anti-lock brakes and traction control. Winter tires perform much better than summer or all-season tires do in ice and snow conditions. Having two tires with good winter traction and two with poor traction will have the anti-lock brake system working overtime. Also, sticking with a smaller tire for winter use is advisable. For ice and snow driving, you want the opposite for summer driving. Wide, low profile tires improve warm, dry weather driving. Tall, narrow, tires provide better control on snow and ice. Consider keeping your stock 16 inch wheels for winter use with winter tires mounted on them and maybe a nice set of 17 inch wheels and tires for summer use. I’ve done that with nearly every vehicle I’ve owned whether front, rear, or all-wheel drive.

Can I replace my 225/45R18 tires with 215/55R17 tires? The 215’s are what ALL tire sites say are original factory size
ANSWER : I owned a 2008 Sonata and currently own a 2015 Sonata Sport 2.0T Limited. With your generation as well as my 2015, the Sonata with the 2.0T engine has larger brakes so the 18 inch wheels make more room for them. Since yours is a 2.4 Limited, it only has the 18 inch wheels for appearance as all 2.4 ltr versions whether Base or Limited, have the same size brakes. I do not recommend a 215mm section width with the 18 inch wheels. The ride and handling will deteriorate badly. If you are sticking with the 18 inch wheels, then stick with the 225/45R18 tires. You can most certainly change down to the 215/55R17 tires AND wheels. Any 17 inch wheels listed for the Base, SE, GLS, etc will fit fine. The ride and handling will be different. It will ride a bit smoother as you are increasing the sidewall aspect ratio – 55 vs 45%. The will also be narrower – 215mm vs 225 mm. It may not grip as well in dry weather but you may notice a little better traction in wet and snowy conditions as there will be more weight concentrated on a narrower tread area. Your speedometer may be slightly off however. The average overall diameter of a 225/45R18 tire is 25.9 inches. So that makes for roughly 802 revolutions per mile. The 215/55R17 will have an average diameter of 26.3 inches and approximately 790 revolutions per mile. A slight difference that may only cause your speedometer to be off by 1-2 mph. On the up side, you may get a slight bump in miles per gallon. The taller tire will reduce engine rpms at highway speeds slightly. So if you are willing to reduce the wheels from 18 inch to 17 inch, then go ahead with the 215/55R17 tires. If you are keeping the 18 inch wheels, then stick with the 225/45R18 tires.

I bought two new tires and rims to put on my car and I want to know if I can make them fit.
ANSWER : Hi there. Anytime you purchase new tires and wheels that are not OEM options (which this 225/45zr17 is not), you risk creating multiple issues that will impact the vehicles performance such as ABS operation, speedometer, cruise control, and braking.

The standard rule used to be, for every inch in wheel size, you need to decrease aspect ratio (the 55 number) by one (making it a 50-series tire). Width would also increase by one size (to 215 from 205). By having a wider tire on there than is recommended, you also risk having turning radius issues and braking suspension components.

Due to these facts, I wouldn’t recommend putting those wheel and tires on your vehicle. If you were to install them, you’d need to purchase new lug nuts that are snug for that individual bolt pattern. Since we can’t see them; it’s impossible to tell you for certain if the ones you have will work.

If you’d like to know for sure, consider having one of our mobile technicians come to your home to inspect your car and suggest what to do from there.

Engine swap details needed. I need to know if the swap will fit.
ANSWER : Hi there. When it comes to swapping engines for your vehicle, what you can do is check all of the engine mounts and transmission mounts and make sure that they will work. If the mounts are a little off but there is room, then you may have to retro fit a custom mount. Check the length of the engine and the transmission assembly together. Make sure that the assembly is the same length. It may be okay if it’s a few inches shorter or longer, however, it cannot exceed 3 inches or the assembly will not fit. There has to be room for the engine to move around. Also, keep in mind, the CV shafts may not match up to the transmission and wheel hubs, especially if the transmission is shorter or longer. If you need further assistance with swapping your engine with another engine, then seek out a professional, such as one from Your Mechanic, to help you.

Inside edge of tires wearing out too fast
ANSWER : There is a technical bulletin from the manufacture to check the alignment camber, and if the camber is out of specification, replace the right rear lower control arm to correct the alignment. As far as the other tires, you should have the complete system alignment checked, and if out of adjustment then the suspension checked for damage or worn out parts. Your camber is out of adjustment if it is wearing on the inside or outside of the tires. Make sure you get the alignment done at a place that has a state of the art newer machine, and not some old machine that may make things worse than they are now. Alignments need to be very precise to keep the tires from abnormal wear.

My tire is to the metal with no tread – I only have enough to get one tire. What tire do I replace?
ANSWER : Temporary spare tires are not meant to exceed 50 mph or be mounted on the car indefinitely. The safest route to take would be to replace the bad tire and return the spare to the trunk as soon as possible. That way, you have a new tire on the vehicle and use of the spare should another tire go bad before you can replace it. Driving with the spare on and no replacement tire should you get another flat will leave you stranded.

Will putting a different tire size cause my car to shake or my tires to wear out quick and uneven?
ANSWER : Hi there. The engineers that design vehicles do so by making sure each part is precisely sized to match others – so the vehicle operates safe and efficiently. This includes the wheel and tire overall width and circumference. What you’re describing is known as the plus (+1) tire / wheel method. However, in your case, it’s in reverse. Usually the manufacturer will permit the vehicle owner to increase the wheel size (to go from a 16" wheel to 17" wheel), but reduce the aspect ratio by one size (from 65 to 55). This usually equates in having an overall circumference that is within recommended specs. However, since you’ve gone down (-1) tire / wheel size. It could cause premature wear and tear, eventual suspension damage, but also damage to the brake calipers. By decreasing the wheel size, the likelihood of your wheels clipping the brakes while turning has increased from the 16 wheel option. As with any aftermarket "upgrade" – always check with your vehicle manufacturer and follow their recommendations.