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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 10-12-2013, 03:39 PM
mNeo mNeo is offline
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Question Ground Clearance issue

I have a 2010 328i with standard 16" wheels. The car currently doesn't have enough ground clearance to make it through our new house's steep driveway without getting a scratch underneath. I've tried entering the driveway at various angles, but that didn't help. Driving the car in reverse is not an option due to the weird curve of the driveway and the main road. Ramps also don't seem an option because of the city and because of the depth needed.

So, I'm thinking that maybe I'll get 18" or 19" wheels to get an extra 1-2 inch clearance, and that may be enough for my needs. Do you see an issue with this idea? Am I correct in assuming that going from 16 to 18 inches will mean 1 extra inch of ground clearance? What else can I do? Shall I get 18 inches and also get the car raised by an inch? Is that a possibility? I don't want to get a different car (maybe an X3) just because I need a bit more ground clearance.
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Old 10-12-2013, 03:57 PM
sunny5280 sunny5280 is offline
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Quote:
Originally Posted by mNeo View Post
I have a 2010 328i with standard 16" wheels. The car currently doesn't have enough ground clearance to make it through our new house's steep driveway without getting a scratch underneath. I've tried entering the driveway at various angles, but that didn't help. Driving the car in reverse is not an option due to the weird curve of the driveway and the main road. Ramps also don't seem an option because of the city and because of the depth needed.

So, I'm thinking that maybe I'll get 18" or 19" wheels to get an extra 1-2 inch clearance, and that may be enough for my needs. Do you see an issue with this idea? Am I correct in assuming that going from 16 to 18 inches will mean 1 extra inch of ground clearance? What else can I do? Shall I get 18 inches and also get the car raised by an inch? Is that a possibility? I don't want to get a different car (maybe an X3) just because I need a bit more ground clearance.
You are incorrect with your assumption. The outside diameter of the tire remains constant regardless of the wheel size.
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Old 10-12-2013, 04:06 PM
mNeo mNeo is offline
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Thanks, sunny! So, that option is also gone.

So, unless someone can suggest me any other solution, I guess I'm buying a crossover.
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Old 10-12-2013, 06:32 PM
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CALWATERBOY CALWATERBOY is offline
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Originally Posted by mNeo View Post
Thanks, sunny! So, that option is also gone.

So, unless someone can suggest me any other solution, I guess I'm buying a crossover.
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Well, we have no idea what the issue really is....do you have a hump or a dip? End of driveway dip? Where's the car make contact?

Of course you can buy ride height adjusters. Suspension mods frequently have that, but usually to decrease ground clearance. Can go both ways - there are alignment issues. You can buy an air suspension - will raise. Cost: significant $. Sorry, we can't see why you can't fix the driveway.

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Last edited by CALWATERBOY; 10-12-2013 at 06:36 PM.
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Old 10-12-2013, 07:11 PM
Pilgrim Pilgrim is offline
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If it's not enough to damage anything, don't worry about it.

And you may have more angles to try - coming in at more than a 45 degree angle ought to work.

If you have a curb angle to get over, you can buy rubber curb inserts to mitigate the abrupt transition.
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Last edited by Pilgrim; 10-12-2013 at 07:12 PM.
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Old 10-12-2013, 07:43 PM
R1200 R1200 is offline
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We had a similar problem with a Miata that had weak rear springs. Reducing weight by keeping the trunk empty helped but when travelling and loaded with luggage the problem was bad. I ended up buying a set of stock springs for a later model Miata from a guy who wanted lower suspension. The new springs fit and we gained over an inch of rear end height.

The simplest solution would be to change the springs for longer ones.
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