Automotive undercar repair and tire sales and services represent the vast majority of our revenues. We also earn revenue from the sale of tire road hazard warranty agreements as well as commissions earned from the delivery of tires on behalf of certain tire vendors.

Revenue from automotive undercar repair and tire sales and services is recognized at the time the customers take possession of their vehicle or merchandise. For sales to certain customers that are financed through the offering of credit on account, payment terms are established for customers based on our pre-established credit requirements. Payment terms vary depending on the customer and generally range from 15 to 45 days. Based on the nature of receivables, no significant financing components exist. Sales are recorded net of discounts, sales incentives and rebates, sales taxes and estimated returns and allowances. We estimate the reduction to sales and cost of sales for returns based on current sales levels and our historical return experience. Such amounts are immaterial to our Consolidated Financial Statements.

Revenue from the sale of tire road hazard warranty agreements (included in the Tires product group in the second table below) is initially deferred and is recognized over the contract period as costs are expected to be incurred in performing such services, typically 21 to 36 months. The amounts recorded for deferred revenue balances at September 26, 2020 and March 28, 2020 were $16.3 million and $18.5 million, respectively, of which $11.8 million and $13.1 million, respectively, are reported in Deferred revenue and $4.5 million and $5.4 million, respectively, are reported in Other long-term liabilities in our Consolidated Balance Sheets.

The following table summarizes deferred revenue related to road hazard warranty agreements from March 28, 2020 to September 26, 2020:



	Dollars in
	thousands
Balance at March 28, 2020	$	18,506
Deferral of revenue		6,908
Deferral of revenue from acquisitions		—
Recognition of revenue		(9,123)
Balance at September 26, 2020	$	16,291

We expect to recognize $7.2 million of deferred revenue related to road hazard warranty agreements in the remainder of fiscal 2021, $7.2 million of deferred revenue during our fiscal year ending March 26, 2022, and $1.9 million of deferred revenue thereafter.

Under various arrangements, we receive from certain tire vendors a delivery commission and reimbursement for the cost of the tire that we may deliver to customers on behalf of the tire vendor. The commission we earn from these transactions is as an agent and the net amount retained is recorded as sales. (Included in the Tires product group in the following table.)



	Quarter Ended				Six Months Ended
	September 26,		September 28,		September 26,		September 28,
	2020		2019		2020		2019
	(Dollars in thousands)
Revenues:
Brakes	$	35,489	$	46,538	$	64,053	$	93,314
Exhaust		5,710		7,108		10,142		14,061
Steering		21,565		26,178		40,033		52,410
Tires		154,505		158,805		291,775		312,870
Maintenance		70,486		84,641		128,106		166,815
Other		832		843		1,537		1,707
Total	$	288,587	$	324,113	$	535,646	$	641,177