What's My Bolt Pattern / Offset
Here at CS Motorsports, we don't expect you to know what your "bolt pattern" is or even your "offset", we are here to help YOU! Below is some basic information to get you started in understanding some of the wheel and tire terminology. Our expert staff has over 83 combined years of knowledge and work history in the automotive industry and we will be more than happy to help you determine the right wheels and tires for your vehicle and we can hook you up with a great package at a great price! Please feel free to call us anytime you have questions at (704) 853-1990 Monday through Friday from 9:00am EST to 6:00pm and Saturdays, 9:00am until 3pm.
Or lug pattern, or bolt circle is the diameter of an imaginary circle formed by the centers of the wheel lugs. Bolt patterns can be 4, 5, 6 or 8 lug holes. The bolt pattern is comprised of two numbers - the first indicates how many bolt holes are on the wheel, and the other describes how far apart they are. for example, a bolt circle of 5x108 would indicate a 5 lug bolt pattern in a circle with a diameter of 108mm.
DUAL BOLT PATTERN
More and more manufacturers are building their wheels with two bolt patterns. This expands the number of fitments the wheel applies to. For example: a wheel with a 4-100/114.3 bolt pattern has 8 lug holes and will fit both 4-100mm and 4-114.3mm fitments.
The distance from the mounting surface of the wheel to the true centerline of the rim. A positive offset means the mounting surface of the wheel is positioned in front of the true centerline of the rim / tire assembly. This in effect brings the tire in to the fender well more. Conversely, a negative offset means the mounting surface of the wheel is behind the true centerline of the rim / tire assembly. This will cause the tire to stick out away from the vehicle.
H = High Positive or FWD (Front Wheel Drive) typically +45, 40, 35 offsets
M = Medium Offset or RWD (Rear Wheel Drive) Typically +20 offset
L = Low Offset or RWD (Rear Wheel Drive) Typically 0 offset
CLICK the Make of your vehicle to see what your bolt pattern is. Kindly note, the following information was sourced from various online sites so it may not be exact for your vehicle due to certain vehicle specifications. Always feel free to call us to confirm fitment for your vehicle.
** Don't see your vehicle listed? Then Contact Us so we can help you figure out the proper wheel and fitment you need. **
HUB CENTER BORE
Relates to the center hole in the wheel that centers the wheel on the hub of the car. Since most wheels are mass produced, they have a large center bore to accommodate several different vehicles. If this is the case, it is recommended that you use a hub ring. Hub rings are hard plastic or metal ring that fits between the wheel and the vehicle. This centers the wheel perfectly on the hub ensuring that there is no run out when the wheel is installed on to the vehicle. Without hub rings it is possible to get vibrations even if the wheel / tire assembly is perfectly balanced.
All alloy wheels should be installed using a torque wrench. This ensures that the wheels are not too tight or too loose. Check your vehicle's manual for correct settings. When you install wheels for the first time, you should re-torque wheels after about 100km to 150km (60 to 90 miles). Always refer to Owner's Manual for proper factory specifications that take precedence over the listed recommendations.