LSD on the 135i?

foghat · 10-24-2013, 10:00 PM

Quote:

Originally Posted by Stohlen

Straight line traction is improved slightly, but its cornering traction under power that is so much improved. The biggest benefit is how predictable the car becomes. You have so much more control when pushing the limits of the car.

As for straight line traction, i believe you are limited by your tire size. I don't like PSS's for straight line traction, because there isn't much rubber meeting the road compared to other tires. Second gear is very usable to me at similar power numbers, but i'm running 285 Direzza's with a 3.46 gear. The gearing makes 1st even shorter, keeping it useless, but second can hook decent with the big tires.

Maybe i just drive like a jackass, but i see the benefits of the LSD daily on the street.

How are you fitting 285s? Must have the fenders rolled? Any clearance problems?

I will probably go 265s as they seem to fit with no issue.

You like the Direzza's? Any idea how they compare to a nitto nt05?

Stohlen · 10-25-2013, 07:19 PM

Quote:

Originally Posted by foghat

How are you fitting 285s? Must have the fenders rolled? Any clearance problems?

I will probably go 265s as they seem to fit with no issue.

You like the Direzza's? Any idea how they compare to a nitto nt05?

I'm on Msport suspension and i dont rub at all. While i do have rolled rear fenders, they are kinda irrelevant as the tires had clearance prior to rolling. You could run these tires on stock fenders with the proper offset.

I love the direzza's, much better than the nt05 which were my previous tires. Nt05s seemed a bit too hard for proper traction. And thats what i'm going for

foghat · 10-26-2013, 12:23 PM

Quote:

Originally Posted by Stohlen

I'm on Msport suspension and i dont rub at all. While i do have rolled rear fenders, they are kinda irrelevant as the tires had clearance prior to rolling. You could run these tires on stock fenders with the proper offset.

I love the direzza's, much better than the nt05 which were my previous tires. Nt05s seemed a bit too hard for proper traction. And thats what i'm going for

Good to know. thanks.

3002 tii · 10-30-2013, 12:13 PM

Quote:

Originally Posted by Stohlen

I'm on Msport suspension and i dont rub at all. While i do have rolled rear fenders, they are kinda irrelevant as the tires had clearance prior to rolling. You could run these tires on stock fenders with the proper offset.

I love the direzza's, much better than the nt05 which were my previous tires. Nt05s seemed a bit too hard for proper traction. And thats what i'm going for

If you're referring to street, that would make sense as the NT05's perform best on track where they can get up to optimal temps.

Stohlen · 10-30-2013, 03:33 PM

Quote:

Originally Posted by 3002 Tii

Quote:

Originally Posted by Stohlen

I'm on Msport suspension and i dont rub at all. While i do have rolled rear fenders, they are kinda irrelevant as the tires had clearance prior to rolling. You could run these tires on stock fenders with the proper offset.

I love the direzza's, much better than the nt05 which were my previous tires. Nt05s seemed a bit too hard for proper traction. And thats what i'm going for

If you're referring to street, that would make sense as the NT05's perform best on track where they can get up to optimal temps.

The nt05 is a harder compound than the Direzza. Both are not track dedicated tires so I'd expect them to perform okay on both. But just okay.

alexmtl_135i · 10-30-2013, 04:11 PM

Does anyone have info on how much better / worse it is with an LSD in heavy snow ?

I'm thinking traction should be better, but in the same time with both wheels spinning you probably get sideways much more easily. Not that I don't like getting sideways, but sometimes you're at a red light on a slight uphill on snow and when getting on the gas it's better to stay straight

RimasRS · 11-01-2013, 06:42 PM

Quote:

Originally Posted by alexmtl_135i

Does anyone have info on how much better / worse it is with an LSD in heavy snow ?

I'm thinking traction should be better, but in the same time with both wheels spinning you probably get sideways much more easily. Not that I don't like getting sideways, but sometimes you're at a red light on a slight uphill on snow and when getting on the gas it's better to stay straight

It is going even more straight than with just EDL

dcaron9999 · 11-04-2013, 08:47 AM

Quote:

Originally Posted by ilikebmxbikes

The 3.46 was great in the sense that the car felt much faster. The shorter gearing sort of put the car at about 500rpm higher than your car would be at with a 3.08. So if you were normally driving in 3rd gear at 2500rpm, with 3.46 you would be at 3000rpm in the same gear at the same speed. The car always felt like it was ready to pounce and felt very aggressive. Your car is also generally above 2000-2300rpm so you pretty much have zero drone all the time. For me, I traded out to a 3.08 because the 3.46 was a little aggressive for street driving, it made first gear worthless ( you would literally have to shift into second mid way through an intersection after a stop) lessened fuel economy by 3mpg or so ( my tuned car already is pretty bad) and the short gears put me around 4k rpm at ~85mph which I didnt like for long drives.

The 3.08 will feel like your stock set up as far as normal function with the added benefits that both posses.

Now that I drive my 1er much less, the 3.46 would suit me much better.

Great feedback ...

BGR · 12-01-2013, 09:18 AM

Quote:

Originally Posted by Dmacc

I drive like a jackass, that's why I got my LSD, just enjoying the purchase everyday

Which LSD did you go with? I just got a 2010 135i 6MT and want this to be my first upgrade. How BMW didn't include it as an option is crazy. At least with the M235i it is a dealer installed option it sounds.

Dmacc · 12-01-2013, 11:25 AM

Quote:

Originally Posted by BGR

Quote:

Originally Posted by Dmacc

I drive like a jackass, that's why I got my LSD, just enjoying the purchase everyday

Which LSD did you go with? I just got a 2010 135i 6MT and want this to be my first upgrade. How BMW didn't include it as an option is crazy. At least with the M235i it is a dealer installed option it sounds.

I went with a Quaife diff. I've had it for about 10k miles and haven't had any problems. Makes daily driving a lot more fun in my opinion.

BGR · 12-01-2013, 01:15 PM

3.08 or 3.46 final ratio?

I'm leaning toward 3.08 knowing that in a couple years once warranty expires I'll be doing some tuning.

Dackelone · 12-01-2013, 01:24 PM

I wonder if the "up coming" BMW Performance LSD for the new 2er and 4er will fit our cars? If it does... this will be a very popular mod. I guess we should know in a few more months when some brave 1er soul tries to fit it.

Dmacc · 12-01-2013, 01:31 PM

Quote:

Originally Posted by BGR

3.08 or 3.46 final ratio?

I'm leaning toward 3.08 knowing that in a couple years once warranty expires I'll be doing some tuning.

3.08, I like the tall gearing when making ~460whp, you can really ring out the gears.

dm135is · 12-01-2013, 02:59 PM

I've ordered a 3.08 LSD for my four month old 135i from Performance Gearing. Jim Blanton has been doing this for the BMW community for decades and knows his stuff. I thought about waiting for the M235i LSD option if it's available, but didn't want to wait and chose the sure thing from Performance Gearing rather than the someday maybe thing from the M235i. I also remember when Porsche offered an optional LSD on the '09+ Caymans and they were criticized for only having 25% lock up and not standing up to track use IIRC, while I'm pretty confident PG's LSD will probably get the job done for the life of the car. I'll report back around here somewhere.

Dackelone · 12-01-2013, 03:27 PM

Quote:

Originally Posted by dm135is

I've ordered a 3.08 LSD for my four month old 135i from Performance Gearing. Jim Blanton has been doing this for the BMW community for decades and knows his stuff. I thought about waiting for the M235i LSD option if it's available, but didn't want to wait and chose the sure thing from Performance Gearing rather than the someday maybe thing from the M235i. I also remember when Porsche offered an optional LSD on the '09+ Caymans and they were criticized for only having 25% lock up and not standing up to track use IIRC, while I'm pretty confident PG's LSD will probably get the job done for the life of the car. I'll report back around here somewhere.

I think you made a good choice.

Kgolf31 · 12-01-2013, 03:43 PM

Quote:

Originally Posted by Dackelone

I think you made a good choice.

Never heard of these people.

However, a $2.5k bolt ready LSD for a 128i? This has me looking into them alittle bit more.

BGR · 12-02-2013, 07:34 AM

Quote:

Originally Posted by dm135is

I've ordered a 3.08 LSD for my four month old 135i from Performance Gearing. Jim Blanton has been doing this for the BMW community for decades and knows his stuff. I thought about waiting for the M235i LSD option if it's available, but didn't want to wait and chose the sure thing from Performance Gearing rather than the someday maybe thing from the M235i. I also remember when Porsche offered an optional LSD on the '09+ Caymans and they were criticized for only having 25% lock up and not standing up to track use IIRC, while I'm pretty confident PG's LSD will probably get the job done for the life of the car. I'll report back around here somewhere.

I had Jim build me an LSD for my e90 330i and he was great to work with. We went through the different lock ratios and how I would be driving the car and I couldn't have been happier. This is the route I'll again.

I remember the Cayman getting criticized for their LSD as well.

10-30-2013, 04:11 PM	#28
alexmtl_135i First Lieutenant 31 Rep 371 Posts Drives: 2013 C63 Coupe P31 Join Date: Oct 2011 Location: Montreal, Canada iTrader: (0)	Does anyone have info on how much better / worse it is with an LSD in heavy snow ? I'm thinking traction should be better, but in the same time with both wheels spinning you probably get sideways much more easily. Not that I don't like getting sideways, but sometimes you're at a red light on a slight uphill on snow and when getting on the gas it's better to stay straight
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12-01-2013, 01:15 PM	#33
BGR Captain 518 Rep 788 Posts Drives: C7 GS 7MT; e90 M3 6MT Join Date: Nov 2013 Location: Midwest iTrader: (1)	3.08 or 3.46 final ratio? I'm leaning toward 3.08 knowing that in a couple years once warranty expires I'll be doing some tuning.
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12-01-2013, 01:24 PM	#34
Dackelone European Editor 10532 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	I wonder if the "up coming" BMW Performance LSD for the new 2er and 4er will fit our cars? If it does... this will be a very popular mod. I guess we should know in a few more months when some brave 1er soul tries to fit it. __________________ Dackel's European Delivery Museum Guide
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12-01-2013, 02:59 PM	#36
dm135is Private First Class 4 Rep 105 Posts Drives: 2013 135i 6MT M Sport Coupe Join Date: Aug 2013 Location: Northern VA iTrader: (0)	I've ordered a 3.08 LSD for my four month old 135i from Performance Gearing. Jim Blanton has been doing this for the BMW community for decades and knows his stuff. I thought about waiting for the M235i LSD option if it's available, but didn't want to wait and chose the sure thing from Performance Gearing rather than the someday maybe thing from the M235i. I also remember when Porsche offered an optional LSD on the '09+ Caymans and they were criticized for only having 25% lock up and not standing up to track use IIRC, while I'm pretty confident PG's LSD will probably get the job done for the life of the car. I'll report back around here somewhere.
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