First of all, life is for living and money is for spending. The trick is balancing your consumption during your accumulation and spending years. A good financial plan done by a CFP helps show what you need to save and what you can spend both now and in the future.
If you want to cut back on spending, try reading books like Millionaire Teacher or The Millionaire Next Door, or MrMoneyMustache.com. If that does not cure you of your spendthrift ways, try binge watching Gail Vaz-Oxlade shows like Till Debt Do Us Part or Money Moron. If watching her for hours does not cure your over-spending habits nothing will.
A dollar saved (invested) today at 6% for 25 years, compounds to more than $4. So every dollar you spend now cuts your retirement spending by $4. By that measure your BMW 435 actually costs you $224k of retirement income. And that excludes gas, insurance, luxury car maintenance costs, etc.
For a long time I never spend more than $25k on a car, and usually much less. My last vehicle was a bottom of the line Honda Civic Hatchback that I kept for 18 years. It was so cheap even the right hand mirror was an option, but it was the best car I ever owned. For my 55th birthday I got me a Lexus IS350. Not the same vehicle dynamics as your coveted 435, but a great luxury sports vehicle that I know will last a long time. My goal is to keep it at least as long as I had the Civic. It has a lot of features that are common now but were only available on luxury cars back then like key-less ignition, backup camera, zenon headlights etc. Great car that I really like, but somehow I don't get the satisfaction I thought I would, because of the cost, insurance, premium gas, plus the ever present risk that some ID10T will crash into it or door it in a parking lot. So think carefully about what else you can do with the money, how you will feel paying big gas and maintenance and repair bills, when it gets that first door dent etc. And if you lease or finance it, think about what an anchor those payments will be, or if you have some financial setback like job loss or needs of aging parents or a market crash because of things that go Trump in the night.
Fancy watches, expensive clothes or booze, big houses don't mean much to me, but other things do and are worth spending on.
If you have thought through all the possible drawbacks, buyer's remorse, overall cost, and it still fits within your long term financial plan... why not?