Official~Best offsets for running FAT tires!
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From: Houston, Tx
Base on the calculator (see attached) a 19x10.5 +45 with a 295/30 would net;
Suspension Clearance: 20 mm (0.8'') closer to suspension/brakes components.
Fender Clearance: stick out 30 mm (1.2'') farther.
Wheelwell Clearance: 100% clear.
Speedometer: When speedometer reads 60mph (96.6km/h) actual speed will be 58.6mph (94.3km/h): 2.3% slower.
FYI: Same set-up with a 295/35 would; Fill the wheel well 6mm and the speedometer would reads 60mph (96.6km/h) actual speed will be 61.1mph (98.4km/h): 1.8% faster.
I have heard on the Vossen thread owners running a 305 tire. However I think this is too aggressive for the G37 sedan.
Suspension Clearance: 20 mm (0.8'') closer to suspension/brakes components.
Fender Clearance: stick out 30 mm (1.2'') farther.
Wheelwell Clearance: 100% clear.
Speedometer: When speedometer reads 60mph (96.6km/h) actual speed will be 58.6mph (94.3km/h): 2.3% slower.
FYI: Same set-up with a 295/35 would; Fill the wheel well 6mm and the speedometer would reads 60mph (96.6km/h) actual speed will be 61.1mph (98.4km/h): 1.8% faster.
I have heard on the Vossen thread owners running a 305 tire. However I think this is too aggressive for the G37 sedan.
Perfect timing to find this thread, just about ready to become a "fat-tire" member 
Got the tires coming tomorrow and the wheels are getting machined later this week. That rimsntires calculator is a great resource. My 09 sedan is going to run 245/35/20 on a 8.5"+35 and 295/30/20 on a 10 or 10.5" +45.
This bracket everyone talks about that may require trimming, where is it specifically and do you think it's a concern on the sedans? Also are the rear offsets safely within the fender lip, don't want a tucked camber. BTW, lowered almost 2" on Megan coils.
Thanks for any help, can't wait to join the club!
Got the tires coming tomorrow and the wheels are getting machined later this week. That rimsntires calculator is a great resource. My 09 sedan is going to run 245/35/20 on a 8.5"+35 and 295/30/20 on a 10 or 10.5" +45.
This bracket everyone talks about that may require trimming, where is it specifically and do you think it's a concern on the sedans? Also are the rear offsets safely within the fender lip, don't want a tucked camber. BTW, lowered almost 2" on Megan coils.
Thanks for any help, can't wait to join the club!
Thread Starter
Registered Member
iTrader: (1)
Joined: Oct 2006
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From: Houston, Tx
Oh no... I'll say... Stretch tires and crazy offsets are NOT functional. 
Perfect timing to find this thread, just about ready to become a "fat-tire" member
Got the tires coming tomorrow and the wheels are getting machined later this week. That rimsntires calculator is a great resource. My 09 sedan is going to run 245/35/20 on a 8.5"+35 and 295/30/20 on a 10 or 10.5" +45.
This bracket everyone talks about that may require trimming, where is it specifically and do you think it's a concern on the sedans? Also are the rear offsets safely within the fender lip, don't want a tucked camber. BTW, lowered almost 2" on Megan coils.
Thanks for any help, can't wait to join the club!
Got the tires coming tomorrow and the wheels are getting machined later this week. That rimsntires calculator is a great resource. My 09 sedan is going to run 245/35/20 on a 8.5"+35 and 295/30/20 on a 10 or 10.5" +45.
This bracket everyone talks about that may require trimming, where is it specifically and do you think it's a concern on the sedans? Also are the rear offsets safely within the fender lip, don't want a tucked camber. BTW, lowered almost 2" on Megan coils.
Thanks for any help, can't wait to join the club!
As far as your 20x8.5 +35 w/ 245/35:
Suspension & Wheelwell clearances are the same.
Fender Clearance: It will stick out 20mm (.8").
Speedometer: 60mph actual speed will be 59.7mph; 0.5% slower.
And for your 20x10.0 +45 w/ 295/30:
Suspension Clearance: 20mm (0.8'') closer to suspension/brakes components.
Fender Clearance: will stick out 30 mm (1.2'') farther.
Wheelwell Clearance: Will fill out the wheelwell by extra 5 mm.
Speedometer: 60mph actual speed will be 60.8mph : 1.3% faster.
See attached pictures.
Thanks man!
Thanks.. here she is not too long ago.. Asked soundmike to photoshop my brakes.
Front is a bit higher now though since I was scraping bad going to work garage. Might drop it again just a little bit once my coils settle some more.
Meaty doesn't mean you can't look good..
Last edited by WARAT; Nov 19, 2012 at 03:56 AM.
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From: Los Angeles
your ride is looking clean brother... really like what youve done!!
one of my favorite wheels... looks like youre lower on that last pic...
your wheels specs are almost as exact as mine... im gonna do a few changes this week along with going lower... what is your ride height from the fender to ground? camber/alignment specs? camber arms? you can Pm me this info if you dont mind sharing...
im sitting at -1.25 up front and -1.5 in the rear... gonna change that a bit...
one of my favorite wheels... looks like youre lower on that last pic...
your wheels specs are almost as exact as mine... im gonna do a few changes this week along with going lower... what is your ride height from the fender to ground? camber/alignment specs? camber arms? you can Pm me this info if you dont mind sharing...
im sitting at -1.25 up front and -1.5 in the rear... gonna change that a bit...
