Is the BMW F30 chassis the next hot track day car? We intend to find out.
Sure, no one tire can do it all, but is it better to run a track-focused tire on the street or a street-focused tire on the track?
Can an older chassis, if properly sorted, be just as fast as some of the latest and greatest sports cars like the Toyota Supra?
Apple CarPlay for your pre-2016 BMW? $200, a little patience and a good chiropractor can fix you up.
We could, theoretically, secure the TA4 class championship at Round 4 of The FIRM’s Track Attack Series this weekend.
The most dramatic thing to happen to our BMW 435i at SCCA Time Trials Nats? The absence of any real drama at all.
Was installing a larger intercooler into our BMW 435i worth the effort? Here's what the data says.
Why did nobody say anything about this simple and inexpensive fix for sticky door handles in our BMW 435i?
Which is faster around Daytona's Le Mans Chicane, the Vitour P1 or the Bridgestone RE-71RS? Here's what the data says.
Hard water making it hard to clean and detail your car? Luckily, solutions exist.
Coil-overs, anti-roll bars and bushings make for better track handling, but what other problems will they create for our dual-duty BMW 435i?
We investigate the mystery of the do-it-all brake pad.
The same boost leak issue affecting our BMW 435i is back again, so this time we applied some overkill to (hopefully) fix the issue.
For less than $20, we fixed one of our BMW 435i's biggest aerodynamic issues.
Another way to stiffen the chassis and improve handling? Track-focused bushings–like the ones we fitted to our BMW 435i.
Normally, we'd just check tire pressures manually after a TPMS failure. On our BMW 435i, however, that failure meant we couldn't disable traction or stability control for the track.
Finding a severe boost leak is the easy part. Fixing the leak? Not always as simple.
Our latest event with our BMW 435i, the FIRM’s Track Attack series, started out great, but then quickly depressurized.
We've all heard the warnings and all the (potential) horror stories, but here's how much it really cost us to own a 10-year-old BMW.
To better maximize our BMW 435i for SCCA's Tuner category–and improve its lap times–we install coil-overs from Motion Control Suspension.
How did our BMW 435i perform in the rain? Time to check the data.
Using some simple data analysis, we identified the patterns slowing us down on track–and developed a plan to fix those bad habits.
While a dyno is a great tuning tool, going on track provides even more information. We compare three different tunes–each one adding a little more boost–during an SCCA Track Night …
The increase in power from recent upgrades helped our BMW 435i achieve faster laps, but could we go even faster by reprogramming the transmission?
To get a baseline of our BMW 435i's engine's health, we not only changed all the fluids but also sent oil samples out to Blackstone Labs for analysis.
Despite the near-constant siren song of the Sawzall, here's our plan to ensure our BMW 435i remains a true dual-duty track car and daily driver.
Our BMW 435i was showing drops in oil pressure under braking on track. The solution? BimmerWorld pointed to a setup used in the factory-built M235i Racing.
Applying vinyl stickers to your car? Here are a few tips to make sure they look good and don't come off.
What's causing our BMW 435i to lose oil pressure under certain conditions on track? We head to BimmerWorld for some expert insight on the N55 engine.
Some upgrades make a car faster. Some, as is the case for our BMW 435i, prevent potential problems.
While a car's stock safety systems work well for the street, the same thing can't be said for track use. That's why we're upgrading the safety systems in our BMW …
What upgrades are in store for our BMW 435i? The answers are in the data we collected during the 2024 Tire Rack SCCA Time Trials Nationals.
Not even two laps in, our BMW 435i project car broke a serpentine belt. What caused it? How will we prevent it from happening again? Read on.
To ensure our BMW 435i is competitive in its SCCA Time Trials class, we compare its track data against the data from another key competitor in the class.
We have focused primarily on safety and reliability with our BMW 435i. However, we found out at the 2024 Tire Rack SCCA Time Trials Nationals it's also fast, too.
Although we had to improvise thanks to back-to-back hurricanes, here's how we prepared our BMW 435i project car for its first big outing: the 2024 SCCA Time Trials Nationals.
Not all upgrades have to improve performance. Some, as is the case with our 435i and its charge pipes, improve durability both on and off the track.
For our BMW 435i project, we really wanted to build a dual-duty car–and to mean it this time–so we're prepping it for the Sport class in the SCCA Time Trials …
What you need to know about BMW N55 oiling issues and how to solve them.
Before our BMW 435i's first big event, we first needed to make sure everything was pointing in the right direction by giving the car an alignment.
Did all our work at BimmerWorld fixing our BMW 435i's oiling issues pay off? Ride along with us at Daytona to find out.
Fresh from BimmerWorld, we're taking our BMW 435i to an SCCA Track Night in America at Daytona to ensure its new oil system and fresh rod bearings work as intended.
We're taking our BMW 435i project car to its first big event: SCCA Time Trials National Tour at Virginia International Raceway. Follow this thread for live updates.
Follow this thread for live updates as we prepare our 2015 BMW 435i project car for its first SCCA Time Trials National Tour event at Virginia International Raceway.
Before we drove our new-to-us BMW 435i any further, we put it up on the lift and replaced its engine oil, transmission fluid and differential lubricant.
Although some might see an out-of-warranty BMW as a siren song, we see it as our next great track car.
Meet our latest project car, a 2015 BMW 435i.
