What happens if I put bigger tires

If you intend to change the rims of your car and you have doubts about it, you may be interested in reading this article carefully. You will solve doubts about the ET of the rim and tire sizes.

There are different aspects to take into account and I will use my personal experience to try to explain everything in the best possible way. In my case I went from a 15″ rim with a 175/65/15 tire size to a new 205/45/17* tire size and a 17×7** rim.

There will simply be more surface area in contact with the asphalt. This translates into greater vehicle stability, but at the same time, depending on how much power your car has, you will notice that it has lost a bit of power output or recovery. Fuel consumption will also increase, but perhaps it is so little that you will never notice it.

The profile is the height of the tire sidewall from the ground to the edge of the rim. And this measurement is a percentage that takes as a reference the width of the wheel (profile 45 is 45% of the tire width). The consequence of this lower profile, and I say this from experience, is that we will notice much more any damage to the road, the speed bumps will seem harder and we will lose some of the comfort we had with the profile of the standard wheels. I also have to comment that a 45 profile like the one I have is not uncomfortable at all. In fact many sport versions of street cars have similar profiles, even lower.

What happens if I increase the tire width?

Wider tires have higher rolling resistance, which increases fuel consumption. In addition, when tires that do not belong to the “lightweight” class are used, then they also have a negative impact on performance (lower vehicle acceleration).

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Which is better: wide or narrow tires?

Wide tires offer better braking response than narrow tires because they provide better grip on the asphalt and have a larger contact surface. In other words, they generate more rolling resistance, which can also increase fuel consumption.

What happens if I change the tire size?

If the tread is altered when changing the tire size and profile, the car’s transmission ratio is being modified. … And remember that even if the tread pattern is respected, a different tire model may alter -for better or worse- the car’s behavior.

Wider tires on the same rim

The first thing you have to decide when choosing the rims for your car is to think if you are going to keep the tires within the equivalent measures or not. This is a crucial decision, because if we decide to mount equivalents the choice of the tire is very complicated but in return we will never have problems with the ITV or the police, apart from the fact that it is generally cheaper and in the long run it is less likely to overload other elements of the car (shock absorbers, bushings, bearings, studs or screws, etc.). If, on the other hand, we are not going to choose anything compatible with the technical specifications of the car, then we will have total freedom to choose the wheel we want but then we will have to homologate it with a company specializing in major reforms homologations.

In my opinion, unless we are lovers of extreme tuning, I recommend choosing equivalent rims and avoid the homologation procedures, although everyone is free to do what they want and it is not so expensive (between 100 and 300 euros depending on what we are going to homologate). Most of this article is oriented to modifications without homologation, but if you want to do it and have doubts I will try to advise you based on the experiences I have had.

Which is better: wider or thinner tires?

Wide tires are generally better in terms of purely driving characteristics. We pay more for greater safety, especially on dry roads, sacrificing comfort and economic efficiency and knowing that there is a higher risk of aquaplaning.

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The greater the width of a tire?

The number 225 is the width of the tire expressed in millimeters. The greater the width, the greater the grip and stability. Traction and performance will increase, but so will fuel consumption. The number 45 is the tire profile, indicated as a percentage of the width.

What does 31×10 5 r15 mean?

Often used on large diameter 4×4 tires, especially on sizes over 30 inches (76 cm). The sizes are represented by 3 digits in 31×10.5R15 format.

Fitting taller tires

Did you know that narrow or wide tires can affect not only the car’s appearance, but also its performance? Here we will answer the ultimate question: Are wider tires better?

Basically, you can get better traction by doing one of two things: having more pressure per square inch or a wider contact patch with the road. In this way, wider tires offer better grip and traction, as they definitely give you a wider contact area.

However, you should also be aware that the increased contact area results in less force on the surface and vice versa. It is not possible to have both options at the same time. Therefore, it means that narrow and thin tires can also provide better traction because they generate more pressure per square inch.

In this category, each type of tire will have its own advantages. Consequently, purchase the tire that best suits the type of roads you will be riding on and other driving conditions.

What happens if I put a narrower cover?

It can affect the ABS system, speedometer and odometer.

Also if you change to a smaller wheel with a short diameter the tire will roll slightly faster than the speed of the vehicle.

Which is better for snow, wide or narrow wheels?

Narrow snow tires work better to prevent aquaplaning because they evacuate and expel standing water better. … On the other hand, wider tires (225 mm) already at 70 km/h start to lose grip on wet ground.

Where to put the best tires?

Whether the car is front or rear wheel drive, the best tires should always be mounted on the rear axle, it is the safest.

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I can put different tires

When I had the 17″ on I had 225/45/17 and 235/45/17 on the rear and the ESP would come on in any sharp corner, but a friend of mine has 225/45 on the front and 245/40 on the rear and the car was running perfectly. These 2 sizes are totally equivalent to each other.

One thing is the development of the tires and quite another the grip provided by two different measures in the same vehicle. It does not mean that by keeping the same development everything is allowed.

Personally I would not do it, I understand that you would lose all the balance of the car and it could be dangerous. And possibly in case of an accident the insurance will not pay for unauthorized major alterations, as well as the police.

In the Sportcoupé file are homologated with 17″ rim for the rear axle about 245/40 instead of the 225/45 of course it is rear wheel drive, de moemnto as I do not plan to compete in formula 1, the 225 remain.

When passing the torque and power from the engine to the rear axle, it is more logical to increase the tire section to get more grip when passing the torque to the rear wheels. In a front wheel drive car it is more compromised since it also relies on the front axle to steer the vehicle.

By Rachel Robison

Rachel Robison is a blogger who collects information on court filings and notices.