5 modifications that can negatively affect your vehicle

stretched tires
It seems these days everyone wants to modify their cars.  There are many reason for modification but mostly because they look cool.  Some modifications are just cosmetic and have no effect on the vehicle’s performance.  Then there are the modifications that can change performance and handling. 
Here are the top 5 modifications that will ruin your vehicles performance.
  • Stretched Tires– You get the stretched look one of two ways. One is to put a narrower tire on the stock wheel. This results in a smaller contact patch than stock and will definitely affect the handling.  The second way it to put stock tires or larger on even wider wheels.  You increase the weight of the wheels increasing the draining power and increasing the unsprung weight which reduces the effectiveness of your suspension.  The solution isn’t to run more negative camber, the solution is to use the correct size wheel and tire.
  • Negative camber– The coefficient of friction between the tire and the ground is probably the tires most important characteristic. It’s pretty simple the higher the coefficient of friction, the more grip the tire has. Peak grip results range from -1.0 to -2.0 degrees of negative camber. The highest negative camber being used in motor sports is Nascar.  They will race set at around -4.0 degrees and lean in about 5 degrees, while keeping the rear camber at -3.6 degrees or less.  Keeping in mind Nascar is running on steep banked ovals with high downforce at amazingly fast speeds.  The G-forces are greater so they are able to use higher camber angles.  The point is if you can see negative camber on a tire chances are it’s a bit excessive.  Heavy negative camber will also provide less grip and uneven tire ware
  • Stiff Springs– Although stiff springs may be necessary in some cases, but that doesn’t make them better for everyone. Motorsports cars use higher spring rates than road cars and thus must use a stiffer spring. Road cars need a softer spring to allow for more grip. Tighter springs also lead to instability when hitting bumps.  Lowering your vehicle requires stiffer springs to restrict the body movement but with that you lose stability.
  • Slammed Stance– It’s clear to understand why slammed vehicles won’t be track stars. If your vehicles clearance is within millimeters of the ground you need the suspension to be rigid, without any travel.  The stiffer the suspension the less it’s able to absorb the bumps.  Vehicles that have been lowered too much will bottom out frequently or bounce over all the bumps in the road.  The ride will not be pleasant, the mechanical grip will be minimized.  IF you must have the slammed appearance, do it right and fit an air suspension. 
  • Drilled Rotors– Drilled rotors do have a purpose, but it’s a case where the benefits do not outweigh the drawback. The sharp edges of the drilled holes can create stress in the rotor. Since the rotor works through wide temp rages from very hot to cooler temps that can result in cracker rotors.  The benefit is with the holes it allows for debris, water and gases to escape which allows for the brake pad to maintain contact with the rotor.  Slotted rotors do all of this as well with a much less failure rate. 
There is the breakdown of the top 5 modifications that can negatively affect your vehicle.  It is important to use only certified mechanics, such as the technicians we hire at ICC Collision Centers when modifying  your vehicle.  ICC Collision Centers requires our mechanics and technicians to be I-CAR and ASE Certified, and they must have extensive experience. 
So when choosing a collision center to properly repair your vehicle, Stop in an talk to us about what we can do for you.  Or better yet, if you have been in an auto collision and looking for a quick and easy way to get an estimate, use our free online e-estimate tool.