Wheel & Tire spec for the Track

maicol76 · 09-19-2018, 03:51 AM

Hello guys~

Could you let me know the spec of wheel(including spacer) & tire for track driving (not for street)?

Mine

F : 18"-10J-20 / 275-35-18
R : 18"-10J-20 + 5mm spacer / 275-35-18

or

F : 18"-9.5J-19 / 275-35-18
R : 18"-9.5J-19 + 5mm spacer / 275-35-18

Richbot · 09-19-2018, 10:43 AM

You want the 10J for track

ApexWheels · 09-19-2018, 11:33 AM

This is a loaded question, but if you are set on running 275/35-18 square (which is a great way to go), we suggest either 18x10" ET25 or 18x10.5" ET22 wheel specs.

The 18x10" ET25 (or ET20) is the most popular wheel spec, and will provide most 275's with plenty of sidewall support. The rear fitment can leave something to be desired, so many add 10/12mm spacers (slimmer spacers if you are using ET20).

For enthusiasts running compounds that run wider than others, we prefer 18x10.5" ET22 for added sidewall support. The 18x10.5" ET22 fitment is also more flush in the rear, which eliminates the desire to run spacers. Assuming you have negative camber dialed in and suspension that does not compromise inner strut clearance up front, this is a fantastic setup that is easy to implement.

Here are some photo's of the 18x10.5" with 275/35-18 Dunlop Star Spec ZII (extreme summer) tires. Note r-comps and slicks will run a touch wider, and will benefit from the 10.5" wheel even more.

- Ryan

09-19-2018, 03:51 AM	#1
maicol76 First Lieutenant 194 Rep 304 Posts Drives: E92 M3 Join Date: Oct 2011 Location: CA, Santa fe iTrader: (0)	Wheel & Tire spec for the Track Hello guys~ Could you let me know the spec of wheel(including spacer) & tire for track driving (not for street)? Mine F : 18"-10J-20 / 275-35-18 R : 18"-10J-20 + 5mm spacer / 275-35-18 or F : 18"-9.5J-19 / 275-35-18 R : 18"-9.5J-19 + 5mm spacer / 275-35-18 __________________ 2011 LCI W/DCT / K&N drop in filter / CSF radiator / do88 oil cooler / do88 DCT cooler / Akra Evo / Moton CS 2 way coilover / Wiechers strut bar(F) / ARC strut bar(R) / Alcon Superkit BBK / Tarox rotor / Geoff steel EHPS / Sard carbon-Kevlar GT wing / GT4 carnard / Aim Evo4+G-dash+GT Steering+S/C GP HD / Bride Zeta3 / etc.
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09-19-2018, 10:43 AM	#2
Richbot Major General 2759 Rep 5,484 Posts Drives: Jerez Black E90 Join Date: Sep 2007 Location: STL iTrader: (5)	You want the 10J for track __________________
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09-19-2018, 11:33 AM	#3
ApexWheels BimmerPost Supporting Vendor 1422 Rep 2,657 Posts Drives: M3 Join Date: Jun 2012 Location: Bay Area iTrader: (2)	This is a loaded question, but if you are set on running 275/35-18 square (which is a great way to go), we suggest either 18x10" ET25 or 18x10.5" ET22 wheel specs. The 18x10" ET25 (or ET20) is the most popular wheel spec, and will provide most 275's with plenty of sidewall support. The rear fitment can leave something to be desired, so many add 10/12mm spacers (slimmer spacers if you are using ET20). For enthusiasts running compounds that run wider than others, we prefer 18x10.5" ET22 for added sidewall support. The 18x10.5" ET22 fitment is also more flush in the rear, which eliminates the desire to run spacers. Assuming you have negative camber dialed in and suspension that does not compromise inner strut clearance up front, this is a fantastic setup that is easy to implement. Here are some photo's of the 18x10.5" with 275/35-18 Dunlop Star Spec ZII (extreme summer) tires. Note r-comps and slicks will run a touch wider, and will benefit from the 10.5" wheel even more. - Ryan __________________ 925-245-0773 /// info@apexraceparts.com Wheels /// Accessories /// Vehicle-Specific Fitment Guides /// Careers Last edited by ApexWheels; 09-19-2018 at 12:17 PM..
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