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The tire is one of the most critical parts of every vehicle. Selecting the best tire is essential for comfortability, safety, and handling. The 225 is the standard tire size for many light trucks, cars, and SUVs. Most car owners prefer to change tire size without changing the rim. What about 225 vs 245 tires?
Wider tires have slightly higher performance than narrower tires. One of the simple ways to enhance the vehicle’s sporty look is using wider tires. If your car, light truck, or SUV’s standard tire size is 225, one of the most common concerns is, can I use 245 tires instead of 225 without changing the rim?
In this post, I will compare 225 tires vs 245 tires head-to-head. What is the difference between 225 and 245? Can they be interchangeable?
In This Article:
225 tire specification.
Tire diameters are usually given in millimeters, and a 225 tire is 225 millimeters (8.9 inches) wide. The 225-size tires are manufactured in various rim sizes and aspect ratios. As a result, tires with different overall tire diameters, circumferences, and sidewall heights can be seen.
245 tire specification.
The 245 tire is 245 mm (9.6 inches) in width. 245 tires are manufactured in a variety of wheel diameters and aspect ratios. So the diameter, circumference, and sidewall height of the tire vary.
What is the difference between 225 and 245? (225 vs 245 tires).
The main technical difference between 225 vs 245 tires is the width. There is a 20 mm difference in width between the two tires. The 225 tire is relatively narrower than the 245. So the 245 wheel has a larger contact patch than the 225. These two types of tires are produced in different aspect ratios and rim diameters. Therefore, other technical specifications, such as sidewall height, circumference, and diameter of the tire, will vary based on those dimensions.
Running different size tires on the rear axle can improve performance, and this is called a staggered tire setup. In this configuration, you can use 225 for the front axle and 245 for the rear axle. This method can improve grip, handling balance, shorter braking distance, and balance performance on wet and dry surfaces. You can use our free online tire size calculator to get more details.
|225 mm Tires||245 mm Tires|
|Less prone to aquaplaning||High tendency towards aquaplaning|
|Better grip in wet and snow conditions||Better grip in dry conditions.|
|Longer braking distance||Shorter braking distance|
|Slightly better fuel economy||Slightly lower fuel economy|
|Fit 7 to 8.5-inch wide alloys||Fit 8 to 9.5-inch wide alloys|
|Less noise||More noise|
|Relatively cheaper||More expensive|
Can I Replace 225 Tires With 245?
Yes, you can replace 225 tires with 245 tires without changing the rim. These two tire sizes are compatible with 8- or 8.5-inch wide rims. These two tires’ width difference is 20mm, which is in the interchangeable range.
When replacing different size tires, you must ensure that both tires have the same rim diameter and the same or higher load index and speed index. However, because this replacement uses a slightly narrower 225 tire, there may be a somewhat looser performance.
Click the following button to use our free tire size calculator to check tire diameter, width, sidewall, circumference, and revolutions per mile.
Can I Replace 245 Tires With 225?
Yes, for 8 or 8.5-inch wide rims, the 225 tires can be replaced with a 245 tire without changing the rim. The 245 is a slightly wider tire, so you have a better grip, handling, shorter braking distance, and less heat generated. Alternatively, you can use 225 for the front axle and 245 for the rear axle. This different width same vehicle setup is called a staggered wheel setup. These two tires’ width differences are 20mm, which is generally acceptable.
Requirement for the use of different size tires.
Before changing the tire size on the same rim, you must consider several safety requirements.
- Rim size: Both new and old tires should have the same rim size, and tires with different rim diameters are not interchangeable.
- Load Index: The load index is the maximum weight a tire can handle, and new tires should have the same or higher load index. Furthermore, all four tires have an equal load index.
- Speed index: All four tires must have the same or higher than the car manufacturer recommended speed index value. Also, new tires should have a value equal to or higher than the standard tire set speed index. You can find the car manufacture recommended speed index in the car’s door jamb.
225 tire advantages.
Better traction and grip on wet and snow roads.
Narrow tires have a relatively smaller contact patch; therefore, per square inch has high pressure. Therefore slim tires have a higher grip on wet and snow roads.
225 is a narrow tire. Generally, slim tires are less hydroplane than wider tires, so narrow tires are safer in rainy weather. Hydroplanes cause understeer in heavy rain.
Better fuel economy.
Narrow tires have better fuel economy (higher MPG). This is because wider tires have a relatively smaller contact area. Therefore, moving the wheels requires less friction and lower torque.
225 tires are cheaper than 245 tires. The obvious reason for this is the difference in the amounts of raw material used. The 225 is a smaller tire and uses less material. Therefore 225 tires is a relatively low cost.
245 tire advantages.
Better traction and grip on the dry road.
The 245 is a tire that has a broader footprint than the 225. Because wider tires cover a greater surface area, the level of friction they produce is more excellent. Because of this, the steering and grip on dry surfaces will be slightly improved.
Shorter braking distance.
Wider 245 tires have shorter braking distances than narrower tires, and this is because the larger contact patch provides more grip.
Less heat generates.
Wider tires have a broader contact area, so the vehicle’s weight is spread evenly over a larger area. This results in a relatively low pressure applied per square inch. So wider tires generate less heat.
Wider tires have slightly more room for air filling. For this reason, 245 wider tires give better comfort than thin tires, significantly reducing the impact of bumps.
How Much Bigger Is A 245 Tire Than A 225?
The 245 tire is 20mm larger than the 225. 245 tire is a wider tire than the 225, and it has a wider contact patch. These two tires are manufactured in different sizes of wheel diameters and aspect ratios. Therefore we cannot mention the sidewall height or overall diameter with just tire width.
Difference between 225/75R16 and 245/75R16.
225/75R16 and 245/75R16 difference is 20 mm in width, 30 mm in diameter, 15 mm in sidewall height, and 94mm in circumference. These two tires are interchangeable; you can use 245/75R16 instead of 225/75R16. Moreover, you can use 225/75R16 front wheel and 245/75R16 rear axle. This tire configuration improves vehicle grip, traction, and braking distance.
|Parameter||225/75 R16||245/75 R16||Difference|
|Overall diameter:||744 mm||774 mm||+30 mm (+4%)|
|Section width||225 mm||245 mm||+20 mm (+9%)|
|Circumference||2337 mm||2431 mm||+94 mm (+4%)|
|Sidewall height||169 mm||184 mm||+15 mm (+9%)|
|Clearance changes||15 mm|
Difference 225/45R18 vs 245/45R18 tires.
225/45R18 and 245/45R18 are interchangeable tires. These two-size tires have different diameters, widths, circumferences, and sidewall heights. The two tires differ by 18 mm in diameter, 20 mm in width, 9 mm in sidewall height, and 57 mm in circumference. In a staggered wheel setup, you can use 245/46R18 rear axle and 225/45R18 front axle. This type of staggered tire setup improves the car’s overall performance.
|Overall diameter:||609 mm||627 mm||+18 mm (+3%)|
|Section width||225 mm||245 mm||+20 mm (+9%)|
|Circumference||1913 mm||1969 mm||+57 mm (+3%)|
|Sidewall height||101 mm||110 mm||+9 mm (+9%)|
|Clearance changes||9 mm|
Changing tire size on the same rim is possible if the two tires’ width variations are 20 mm. 225 and 245 are interchangeable tires if you have an 8 or 8.5-width rim.
However, before replacing the different sizes of tires, you must check that it complies with the insurance policy. Because some insurance policy does not allow changing the tire size.
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