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Will i need spacers????

Old 05-09-2017, 09:50 AM
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Question Will i need spacers????

Hi guys, i have a doubt:

I'm about to change my ride's rims. Nowadays i have OEM 16" rims and i'm buying a set of Borbet A in 17". Front rims are 7" wide and rear ones are 8.5". My question is, will i need spacers? The car is not slammed, but lowered with Eibach Pro springs.

Thanks in advance!
Old 05-09-2017, 11:15 AM
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99 E320
you really are going to need to post the full specs on the wheels you are looking
at. include the offset and the tire sizes you plan to use. that is, if what you
are concerned about is to prevent the tire from rubbing any part of your
suspension. also critical is whether you have performed (or planned) any
modifications to your suspension as this may affect clearance issues.
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Old 05-09-2017, 11:38 AM
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Thanks! I'm thinking of 215/40/17 in front and 245/40/17 for the rear end.
Old 05-09-2017, 01:45 PM
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.....but what are the offsets on the wheels you're contemplating?
Old 05-09-2017, 01:52 PM
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Unhappy

Originally Posted by raymond g-
.....but what are the offsets on the wheels you're contemplating?
According to the maker's specs, it should be around 20...

Last edited by mlopez218; 05-09-2017 at 01:59 PM.
Old 05-09-2017, 03:40 PM
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ouch !! don't buy the wheels.

your factory wheels should be around 35mm or so. if you look at the back of
your current wheels it should be marked as "ETxx"

an ET (or offset) of the wheels you are looking to buy are so low that they will
extend outwards from the center of the car almost 15mm than that of your
current, factory wheels and design. this means that there is the possibility
that your wheel/fender arch will make contact with the tire.

spacers are designed to push the wheel out, horizontally, from the center of
the vehicle so, no. you do not need spacers.

hoping these will help you in future selections

https://www.wheel-size.com/calc/?whe...=30mm&scl=50mm

http://www.1010tires.com/Tools/Wheel-Offset-Calculator

https://www.miata.net/garage/tirecalc.html
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Old 05-10-2017, 11:36 AM
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Originally Posted by raymond g-
ouch !! don't buy the wheels.

your factory wheels should be around 35mm or so. if you look at the back of
your current wheels it should be marked as "ETxx"

an ET (or offset) of the wheels you are looking to buy are so low that they will
extend outwards from the center of the car almost 15mm than that of your
current, factory wheels and design. this means that there is the possibility
that your wheel/fender arch will make contact with the tire.

spacers are designed to push the wheel out, horizontally, from the center of
the vehicle so, no. you do not need spacers.

hoping these will help you in future selections

https://www.wheel-size.com/calc/?whe...=30mm&scl=50mm

http://www.1010tires.com/Tools/Wheel-Offset-Calculator

https://www.miata.net/garage/tirecalc.html
I have the specs!!!!
Front rims: 17"x7" ER38
Rear rims: 17"x8.5" ER32
Old 05-10-2017, 08:29 PM
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well, that sounds much better. however, I'm not going to attempt to tell you
yes or no. the reason is that you've lowered your suspension so you're
changing the equation even more than just basing it on the stock ride height.
this means that you're beginning to approach the limits of what you can do...
and how much you're willing to gamble.

the wheel calculators will narrow down your choices and give you some sense
of what your new wheels and tires will allow...as well as how much room you
have to play with.

just take your current tire and wheel specs and plug them into the calculators.
do the same for the offset to see how much further in/out the offset will be
shifted with your new wheels.

only you can extrapolate from these figures and gauge them against how much
your car has been lowered and how much clearance you have to play with

factors which bear in terms of wheel/tire selection are

wheel size
wheel offset
tire size (also, tires with same size numbers vary between manufacturers)
springs design
spring preload
spring pads

Last edited by raymond g-; 05-10-2017 at 08:31 PM.
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Old 05-11-2017, 09:21 AM
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Thanks guys! I'll keep you posted.
Old 05-29-2017, 11:29 AM
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Hi there! Yesterday i received my new set of rims!! Borbet type A 17x7 and 17x8.5:
Old 05-29-2017, 07:38 PM
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C350
Same question....

I was wondering if we're going to need spacers on my 2006 C350. Currently using 16" and found someone selling 2015 C-class OEM 17".

Will I need spacers on my vehicle if I were to purchase these wheels?
Old 05-30-2017, 11:48 AM
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It depends mostly on how high or low your ride is, but i believe those rims are plug `n play.

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