Originally Posted by white collar
They do, Dinan mods are covered under factory BMW warranty, although this is not a 335 with Dinan parts, this is one Dinan actually made, which as I understand it means the whole car has been reinforced to handle the extra power. $300-$400 visits don't bother me as long as it's not every month. $1,000+ bill doesn't bother me again as long as it doesn't become a habit. I just don't know if BMW's are one of those cars that needs a 3k service every 20,000 miles.
You drive too many miles for ownership of a BMW (or any high end Germany) to be relatively inexpensive. Average mileage per year is about 15,000 per year. If you are driving a minimum of 2,000 miles per month, you will be compressing 2 years of service into roughly every 15 months of driving. I don't know BMW service costs, but averaging MB and Porsche costs that I am familiar with, where a small service is say $250 and a larger service is say $450-550...so without any wear and tear items needing replacement you will annually be spending say $700-800. In addition, if this is anything like an AMG MB....parts and service tend to be much more expensive than on a standard (Non-AMG/Non Dinan model).
As someone with a Subaru for everyday, and a Porsche for weekends, the costs aren't even close. I can use regular oil in the Subie and an oil change is $28 at the dealer...its something like $225 for the Porsche because of the synthetic oil. Or when it comes to tires, 4 Pirellis mounted, balanced, and a 4 wheel alignment was close to $600 for the Subie. On the Porsche 4 tires not mounted, balanced, or aligned is around $1,300 and they don't last 1/3 as long, especially if you are an "Enthusiastic driver." If you are going to keep the Honda for everyday and just use the Dinan BMW occasionally then the cost of owning the Dinan won't be too bad. If you didn't like Subaru dealer pricing, I don't think you will like BMW dealer pricing if you are averaging 24,000-30,000 miles per year. Wishing you luck on whatever you decide. If I were you, I'd go on a dedicated BMW forum and find out what the costs are for owning a regular 3 series and a Dinan version from someone with experience driving those cars well beyond average yearly mileage. Cheers!