Ontario does not require winter tires by law, but the Ontario government’s Winter driving guidance recommends them, (checked November 2026). Eligible private passenger auto policies must offer a winter-tire discount, although the amount and qualifying conditions depend on the insurer. This guide explains the tire choices and questions to ask before buying tires or claiming the discount.
What Ontario recommends for winter driving
For drivers in Brampton, Mississauga and Caledon, separate the legal requirement from the driving recommendation. The Ontario government’s Winter driving guidance, checked November 2026, advises installing four winter tires and never mixing tire types. It identifies the three-peak mountain snowflake symbol as a marking to look for when choosing tires for winter use.
The same ministry guidance says all-season tires can start to lose grip at 7 degrees Celsius. That statement comes from Ontario’s Winter driving guidance, checked November 2026; it is a reason to plan a seasonal change before snow becomes a regular concern.
Read the Ontario government’s Winter driving guidance for the official recommendations and restrictions. Verify current rules with the Ontario Ministry of Transportation, particularly before considering studded tires. Tire selection also belongs within a broader seasonal maintenance checklist, alongside visibility, fluids and the condition of the vehicle.
How the insurance discount works
According to Financial Services Commission of Ontario regulatory bulletin A-05/15, insurers must make a winter-tire discount available on eligible private passenger auto policies issued or renewed on or after January 1, 2016. The regulation does not set the discount amount, so insurers decide the amount and it varies.
The Financial Services Regulatory Authority of Ontario, or FSRA, took over the commission’s role in 2019. This is general information, not insurance advice: your insurer determines eligibility under its policy terms, while FSRA regulates Ontario auto insurance.
Ask about the discount before purchasing tires. Conditions differ by insurer and may concern fitting a complete winter set, acceptable tire types, tire age, installation periods or evidence such as an invoice or photograph. These are examples of questions to raise, not conditions that apply to every policy.
Ask which part of the premium receives the discount and when it takes effect. Keep the insurer’s written explanation with the policy documents, and check that any agreed discount appears in the policy information. Verify current availability and requirements with your insurer and FSRA.
Winter, all-season, all-weather and studded tires
Read the sidewall markings rather than relying only on a product description. The Ontario ministry’s Winter driving guidance, checked November 2026, points drivers to the three-peak mountain snowflake symbol. An insurer’s acceptance of a particular tire remains a separate question.
| Tire type | What to know | What to confirm |
|---|---|---|
| Winter | Intended for winter conditions. Look for the mountain snowflake marking. | Correct fit for the vehicle and acceptance under the insurer’s discount terms. |
| All-season | The name does not mean the tire maintains the same grip as temperatures fall. | Whether a seasonal winter set is appropriate for the driving conditions. |
| All-weather with the snowflake symbol | Check the actual sidewall marking rather than assuming the label establishes eligibility. | Whether the insurer accepts that specific tire for its discount. |
| Studded | Subject to registration and regional restrictions in Ontario. | Whether the vehicle qualifies before buying or fitting them. |
Under the Ontario government’s Winter driving guidance, checked November 2026, studded tires are allowed on vehicles registered in Northern Ontario. They are not allowed in Southern Ontario except for visitors from outside the province or Northern Ontario residents. Peel Region drivers should verify eligibility with the ministry rather than treating studded tires as an ordinary local option.
What to check before the seasonal change
Arrange the seasonal swap with enough time to inspect the tires coming out of storage. Ask the installer to explain damage, uneven wear or concerns about the wheels before authorizing additional work. If the vehicle pulls, vibrates or brakes differently, describe the symptoms rather than assuming a tire change will resolve them.
- Vehicle fit: confirm the tire and wheel combination is suitable for the vehicle.
- Condition: look for visible damage, unusual wear and anything embedded in the tread.
- Age: find the date code on the sidewall and ask for help interpreting it if necessary.
- Pressure: use a gauge when the tires are cold and follow the recommended pressure on the vehicle’s door-jamb placard.
- Insurance: confirm qualifying tires, any required installation period and acceptable proof.
- Storage: clean and dry the removed tires, identify their positions and choose a suitable storage location.
Tire pressure changes with temperature, so check it as the weather changes rather than relying on appearance. Keep track of tire age as well as visible condition; a stored tire still needs inspection before reuse.
Ask how the removed set should be stored and whether its condition raises concerns for the next season. Keep any inspection findings with the tire records. Treat squealing, grinding or a change in stopping behaviour as a separate reason to review brake wear and repair signs.
Keep proof and understand tire warranty terms
Keep the purchase invoice, tire description and any installation record together. If the insurer requests photographs or another form of evidence, confirm what must be visible before submitting it. When renewing or changing insurers, check the requirements again instead of assuming an earlier acceptance carries over.
Tires are exempt from the repair warranty under section 52 of Ontario Regulation 17/05, according to the Ontario government’s auto repair guide, checked November 2026. That exemption makes it useful to ask separately about the written warranty offered on the tires and any applicable installation terms.
This is general legal information; Ontario’s consumer protection authorities provide guidance, and courts decide legal disputes. Verify the current exemption with Ontario’s official regulation and consumer protection guidance. The guide to repair invoices and Ontario warranty rules explains the broader distinction between an invoice, a repair warranty and a complaint.
Frequently Asked Questions
Can an Ontario insurer refuse to give everyone the same discount?
The regulation does not set a uniform discount amount, according to Financial Services Commission of Ontario bulletin A-05/15 from 2015. Each insurer determines its amount and qualifying conditions. Ask your insurer for the terms that apply to your policy, and verify current regulatory guidance with FSRA.
Does the mountain snowflake marking guarantee insurance eligibility?
Do not assume it does. Ask your insurer whether the specific tires qualify and what evidence it needs. Keep the written answer with your insurance records.
Is looking at a tire enough to check its pressure?
Use a pressure gauge when the tires are cold. Follow the recommended pressure on the vehicle’s door-jamb placard, and recheck as temperatures change.
What should a private buyer check if winter tires come with a used vehicle?
Inspect the included tires for damage and uneven wear, and identify their sidewall date codes. Confirm that the set fits the vehicle and ask for available purchase records. Check insurance eligibility directly with your own insurer.