When should BMW 525i spark plugs be replaced?

Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on BMW’s recommendations.

What should I do if I see leaks under my 525i?

Don't ignore puddles of fluid under your BMW 525i. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.

Are hard starts and stops bad for my BMW 525i engine?

Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.

1991 BMW 525i Tune-Up & Engine Service

Get a Tune-Up

Enhance BMW 525i Performance with a Tune-Up

Is it tune-up time? If you tend to ignore your car until something goes wrong, now is the time to work on that habit, especially if you drive a 1991 BMW 525i. Routine engine tune-ups can bring power back to your 525i. Tune-ups help your engine start smoothly and run efficiently, which can lead to lower emission levels and better fuel economy. When you take your car for regular engine tune-ups as recommended by BMW, you invest in your 525i's long-term health and engine performance.

Engine Tune-Up for BMW 525i

The Firestone Complete Auto Care location in your community offers several BMW 525i engine tune-up services. One option is the standard Firestone Tune-Up. It includes a complete visual inspection of engine components, installation of new spark plugs, and a lifetime warranty on parts*. The second service focuses on your 525i's filters, specifically replacing the air filter and fuel filter. The third tune-up option is a fuel system cleaning service, which is a three-step process that removes varnish, dirt, and carbon deposits on your 525i's fuel injectors, throttle body, and throttle plate. The result? Restored fuel system performance. Consider this when choosing a tune-up service for your 525i: your vehicle’s maintenance record and mileage can determine which service is best. This means that a tune-up service that’s a great fit for another car may not be optimal for yours. Chat with a Firestone technician before you jump into a specific service to ensure your engine tune-up money is well-spent.

Where Should I Go for My BMW 525i Tune-Up?

Come to Firestone Complete Auto Care for your next 1991 525i engine tune-up. Consult your vehicle’s recommended service schedule from BMW, or make a service appointment if you notice any of these symptoms from your engine: stalling or shaky idling when you’re stopped, diminished fuel economy, an illuminated check engine light on your dashboard, or a knocking sound when the engine is running.

*Talk to a Firestone Complete Auto Care teammate for full terms and conditions on warranties.

Questions About 1991 BMW 525i Engine Tune-Ups

When should BMW 525i spark plugs be replaced? Replace spark plugs on time or about every 30,000 miles or so. Without the spark of electricity created by spark plugs, your engine doesn’t have the combustion it needs to start — which could leave you stranded on the road. Always replace your spark plugs on time based on BMW’s recommendations.
What should I do if I see leaks under my 525i? Don't ignore puddles of fluid under your BMW 525i. It could signal a coolant leak, brake fluid leak, or an oil leak. Let any one of these leaks linger and it could cause engine damage.
Are hard starts and stops bad for my BMW 525i engine? Hard starts and stops put extra wear and tear on engine components. Smooth, gradual starts and stops, on the other hand, are a great way to help your engine run better. They can also help maximize your fuel economy.

1991 BMW 525i Maintenance

Take care of your vehicle and it'll take care of you. Click on a service below to learn more about properly maintaining your BMW 525i.

1991 BMW 525i Repair

Your car takes care of you, and we’ll take care of your car. When it’s time for a repair on your BMW 525i, we’re here to help. Check out more info below about 1991 BMW 525i repairs.