2015 50i vs 2014 M5

[Speenybean]

Thinking of getting rid of my 2015 X5 50i for a 2014 M5 that only has 29k miles. What y'all think.

[turboawd]

If you don't need the utility aspect of an suv, then go for it. The m5 is a beast.

[Reign2016]

yes yes yes

[bmwdinan5]

The M5 S63 engine is far more superior than the N63TU which is in the '5.0.' Beyond performance, the internals are far more superior.

[ponytuning]

If the decision is solely based on power/fun factor then absolutely yes, otherwise these are totally different class of cars with their benefits and drawbacks.

[Speenybean]

Originally Posted by bmwdinan5

The M5 S63 engine is far more superior than the N63TU which is in the '5.0.' Beyond performance, the internals are far more superior.

Originally Posted by bmwdinan5

The M5 S63 engine is far more superior than the N63TU which is in the '5.0.' Beyond performance, the internals are far more superior.

How do the 2 compare in regards to maintenance cost / frequency and reliability? Thanks man

[parkstr8]

Link to the car?

[Speenybean]

Originally Posted by parkstr8

Link to the car?

Originally Posted by parkstr8

Link to the car?

Nardo grey under m5 forum classified

[CT335xi]

Originally Posted by Speenybean

How do the 2 compare in regards to maintenance cost / frequency and reliability? Thanks man

They both are expensive to maintain but I would say anything M will be a little more expensive, at least when I owned my m3 the cost of parts were always more and sometimes double of what your normal 3 series would cost. I would do it even you don’t need the utility out of the X5, but keep in mind that m5 probably has no warranty left on it possibly. Though at least the miles are really low for that year. Do you plan on daily driving it?

[Speenybean]

Originally Posted by CT335xi

They both are expensive to maintain but I would say anything M will be a little more expensive, at least when I owned my m3 the cost of parts were always more and sometimes double of what your normal 3 series would cost. I would do it even you don’t need the utility out of the X5, but keep in mind that m5 probably has no warranty left on it possibly. Though at least the miles are really low for that year. Do you plan on daily driving it?

Originally Posted by CT335xi

They both are expensive to maintain but I would say anything M will be a little more expensive, at least when I owned my m3 the cost of parts were always more and sometimes double of what your normal 3 series would cost. I would do it even you don't need the utility out of the X5, but keep in mind that m5 probably has no warranty left on it possibly. Though at least the miles are really low for that year. Do you plan on daily driving it?

Yes it would be my daily driver. My current X5 50i has 56k miles

[CT335xi]

Originally Posted by Speenybean

Yes it would be my daily driver. My current X5 50i has 56k miles

Honestly car that nice I likely wouldn’t daily , I would pick up a beater. I use to drive my e36 4 dr m3 thru winter , was great with 4 snow tires!! But I would hate to put a nice m5 thru the winters with all the crap and salt on the roads, though then again here in the Northeast we really haven’t had a real bad winter the last couple years. Also running up the miles is going to make it worth less obviously when you decide to get rid of it, plus the higher the mileage more chance of the common shit breaking / wear and tear. Good luck

[Speenybean]

Originally Posted by CT335xi

Honestly car that nice like that I wouldn’t daily , I would pick up a beater. I use to drive my e36 4 dr m3 thru winter , was great with 4 snow tires!! But I would hate to put a nice m5 thru the winters with all the crap and salt on the roads, though then again here in the Northeast we really haven’t had a real bad winter the last couple years. Also running up the miles is going to make it worth less obviously when you decide to get rid of it, plus the higher the mileage more chance of the common shit breaking / wear and tear. Good luck

Originally Posted by CT335xi

Honestly car that nice like that I wouldn't daily , I would pick up a beater. I use to drive my e36 4 dr m3 thru winter , was great with 4 snow tires!! But I would hate to put a nice m5 thru the winters with all the crap and salt on the roads, though then again here in the Northeast we really haven't had a real bad winter the last couple years. Also running up the miles is going to make it worth less obviously when you decide to get rid of it, plus the higher the mileage more chance of the common shit breaking / wear and tear. Good luck

I know man. I'm in NJ and I got my F15 and haven't needed any AWD this year at all. I'm like wtf

[pennsiveguy]

Originally Posted by bmwdinan5

The M5 S63 engine is far more superior than the N63TU which is in the '5.0.' Beyond performance, the internals are far more superior.

They're the same block and heads and reciprocating assembly, from my research. Do you have evidence of substantial internal differences, or did you just pull that out of your downpipe and expect everyone to believe it? Link(s)?

[CT335xi]

Originally Posted by pennsiveguy

They're the same block and heads and reciprocating assembly, from my research. Do you have evidence of substantial internal differences, or did you just pull that out of your downpipe and expect everyone to believe it? Link(s)?

The s63 is a m engine and the only thing they have in common is the displacement of 4.4 ltrs , as far as I know you don’t hear about the s63 using oil at the rate of the n63tu, though I know there are people who claim their n63tu uses little to no oil. The majority of them do and that sucks. The s63 >n63tu , there just built better with stronger internals , different pistons, caps and main bearings to name a few. Googled it and found a nice Car and Driver article about the difference’s . They are built in the same plant but that and 4.4 engine is all they really have in common.

[pennsiveguy]

Originally Posted by CT335xi

The s63 is a m engine and the only thing they have in common is the displacement of 4.4 ltrs , as far as I know you don’t hear about the s63 using oil at the rate of the n63tu, though I know there are people who claim their n63tu uses little to no oil. The majority of them do and that sucks. The s63 >n63tu , there just built better with stronger internals , different pistons, caps and main bearings to name a few. Googled it and found a nice Car and Driver article about the difference’s . They are built in the same plant but that and 4.4 engine is all they really have in common.

If you're referring to this article, there's only a few differences discussed. More importantly, the S63 in that article is the S63B44T4 from the 2019 M5C, not the S63B44T0 that's in the 2014 M5 that the OP is considering buying. The N63 in the article isn't the same either. Not a valid source for comparison.

You're one of the people for whom "M" stands for magic. It's not magic. It's just a bunch of metal and plastic and rubber and glass, same as the cars that don't have an "M" on them.

[CT335xi]

Haha your pretty funny as I own a 50i which I enjoy driving , but let’s not kid ourselves m engines are superior to ours period I don’t care which model your comparing there is a reason they cost more , nothing magical about it.

[HydroStream6]

OP: Do what you want. It's your money and no one else knows your needs better than you. There's nothing inherently bad about the M5. If you like it, do it.

Everyone else: The engines in these two vehicles are very similar. Same pistons from the factory even. The S is capable of more hp with stock hardware. It definitely has some upgrades over the N, but stating that the internals are far more superior is laughable, and just plain wrong. As for problems, both have their issues. Both will sling rods if pushed too hard. You hear about more issues with the N engine, perhaps because there's so many more out there than the S engines.

[bmwdinan5]

I rebuild N63* and S63* engines all day. The differences go well beyond what the article calls out. Furthermore, even though the N63TU has improved cooling capabilities to minimize Hot-V failures, statistically we are now seeing the same failure, just not as early as the N63. Sadly, based on tear downs we have been doing for analysis the N63TU3, even with the additional upstream radiator are suffering from the same Hot-V failures that we don't see on the S63's.

Also at the end of the day... you either have a BMW or you have a //M. Very different cars

[pennsiveguy]

Originally Posted by bmwdinan5

I rebuild N63* and S63* engines all day. The differences go well beyond what the article calls out. Furthermore, even though the N63TU has improved cooling capabilities to minimize Hot-V failures, statistically we are now seeing the same failure, just not as early as the N63. Sadly, based on tear downs we have been doing for analysis the N63TU3, even with the additional upstream radiator are suffering from the same Hot-V failures that we don't see on the S63's.

Also at the end of the day... you either have a BMW or you have a //M. Very different cars

Share your information - detailed and documented statistics on the two engines' durability - and your credentials, so we can all benefit. It would be of great value.

[bmwdinan5]

I can not share actual statistics because of my involvement in class action lawsuits related to the customer care program, but all the info is out there on the Web or you can speak with a BMW service manager or shop foreman... they'll tell ya.

Regardless, non //M V8's are fun, but will always be panultimate to an //M.

[evillwock]

Originally Posted by pennsiveguy

Share your information - detailed and documented statistics on the two engines' durability - and your credentials, so we can all benefit. It would be of great value.

+1

I would also like to know more about this. From an emotional standpoint it’s clear M cars are more special, but factuality would help this thread!