Interpretation ID: aiam4079
Managing Director
Certification Business Division
Mazda (North America)
Inc.
24402 Sinacola Court
Farmington Hills
MI 48018;
Dear Mr. Hayashibara: This responds to your letter seeking an interpretation of certain term used in Standard No. 110, *Tire selection and rims - passenger cars* (49 CFR S571.110). Specifically, you asked about the definitions of the terms 'curb weight', 'accessory weight', and 'production options weight'. These terms are defined in Standard No. 110 as follows.; The 'curb weight' of a vehicle is calculated by adding the weight o the vehicle with all of its standard equipment, including its maximum capacity of fuel, oil, and coolant to the weights of two optional items of equipment, *if the vehicle is equipped with these optional items*. The items whose weight is included in calculating the curb weight, if present on the vehicle, are air conditioning and the additional weight of an optional engine. No other optional items are included in calculating a vehicle's curb weight, even if the vehicle is equipped with such options.; The 'accessory weight' of a vehicle means the combined weight (i excess of the weight of the standard equipment items that may be replaced) of automatic transmission, power steering, power brakes, power windows, power seats, radio, and heater to the extent that these items are available as factory-installed options on that vehicle, *regardless of whether these options are actually present on the vehicle in question*. No other items of optional equipment are included in calculating the accessory weight, even if the vehicle is equipped with such options.; The 'production options weight' means the combined weight of all item of optional equipment that meet all of the following criteria:; (1) The weight of the item of optional equipment is more than fiv pounds greater than the weight of the item of standard equipment that it replaces,; (2) The optional equipment is present on the vehicle in question, and (3) The weight of the optional equipment has not previously bee considered in either the curb weight or the accessory weight.; Section S3 of Standard No. 110 lists the following examples of items o optional equipment whose weight might be considered when calculating the production options weight: heavy duty brakes, ride levelers, roof rack, heavy duty battery, and special trim. However, any item of optional equipment that meets the three criteria listed above *would* be included in calculating the production options weight, even if that item were not listed in the examples. Therefore, Mazda's understanding is correct that the weight of four-wheel drive components, aerodynamic accessories, special body styling panels, and sunroofs *are* included when calculating the production options weight.; If you have any further questions on this subject, or need mor information, please contact Steve Kratzke of my staff at this address or by telephone at (202) 426- 2992.; Sincerely, Erika Z. Jones, Chief Counsel