2021 BMW X5 — catalyst efficiency code but car drives normally
A catalyst efficiency code came back after clearing once. The car drives normally and there are no misfire codes. Before condemning the catalytic converter, wh…
A catalyst efficiency code came back after clearing once. The car drives normally and there are no misfire codes. Before condemning the catalytic converter, wh…
2023 BMW M340i xDrive, about 32,500 miles. A former rental is cheaper than privately owned examples and has frequent service records. Cosmetics show normal wea…
2015 BMW 335i, about 76,500 miles. Paint looked perfect after polishing, but water spotting returns after outdoor washes. I do not want to keep removing clear…
2021 BMW X5 xDrive40i, about 61,500 miles. A windshield was replaced and now there is a whistle around highway speed that did not exist before.
2023 BMW M340i xDrive, about 20,000 miles. After owning the car for a while, tires, insurance and service pricing mattered more than the MPG difference I obses…
2018 BMW 340i xDrive, about 96,000 miles. There is early surface rust on brackets, fasteners and seams underneath, but nothing structural. For a salt-belt car,…
I do not want to judge a tune only by how fast the car feels. Which parameters are worth logging periodically if the goal is catching fuel, knock, boost or tem…
2025 BMW M3 Competition, about 18,500 miles. Dealer gave me an order/reference number but the status has been unchanged for weeks. For people who have ordered…
I want smaller winter wheels for more sidewall. Overall tire diameter can stay close, but I am worried about caliper and spoke clearance. What measurements sho…
Displayed range moves too much with weather and recent driving to be a useful health metric by itself. What repeatable measurements do you trust for tracking b…
The car is smooth around town, but there is a noticeable steering-wheel vibration in a narrow highway speed range. It gets better again above that speed. Tires…
I've brought the car in twice for an intermittent warning and both times the dealer says no fault found. I have video and timestamps. What's the best way to do…
2023 BMW M340i xDrive, about 35,500 miles. One dealer documentation fee is much higher than others nearby. Is it better to stop arguing about the label and jus…
Private seller says several people are interested and asks for an electronic deposit to hold the car before I can see it. The listing is not obviously fake, bu…
2024 BMW i4 eDrive40, about 34,500 miles. I am shopping a new car with several similar units sitting nearby. Dealer started at MSRP plus fees. What is the best…
2020 BMW M2 Competition, about 79,000 miles. I do not want to judge a tune only by how fast the car feels. Which parameters are worth logging periodically if t…
2023 BMW M340i xDrive, about 33,500 miles. There is early surface rust on brackets, fasteners and seams underneath, but nothing structural.
The engine shut off at a stop once, restarted right away, and has been normal since. No warning stayed on. What data or checks would you prioritize before trus…
Every few days the car hesitates for a split second leaving a stop, then drives normally. No permanent warning light. I want to know what data to capture the n…
Bought a cheap project because the shell was solid, and now the 'small stuff' list is longer than the drivetrain list. How do you guys prioritize safety/reliab…