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What are the largest wheels I can put up front without BFH?

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Old 01-09-2012, 02:04 PM
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Default What are the largest wheels I can put up front without BFH?

Title says it. My vehicle is a 2000 Trans Am. I read the sticky and it said I can get away with a 285 on a 9.5 rim but it did not mention if cutting the fender well covers or work with the BFH was necessary. Does anyone know? Thanks.
Old 01-09-2012, 02:36 PM
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I'm curious too.
Old 01-09-2012, 02:52 PM
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You can absolutely fit that, a 295 on a 10.5 is hit or miss, some need an 1/8" spacer. An 11 with a 315 will fit with a spacer, neither need cutting
Old 01-09-2012, 03:02 PM
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Yeah with the right offset and a spacer you can fit 315's up front. Do people even do the BFH mod up front?

Found these pics using the search.





+
Old 01-09-2012, 03:08 PM
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I don't understand what you would be using a hammer on in the front of the car...lol. Plastic fenders and plastic under it. It's mainly an issue with spindle. You just have to get a proper offset and spacer if needed
Old 01-09-2012, 05:35 PM
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Originally Posted by babbage1109
I don't understand what you would be using a hammer on in the front of the car...lol. Plastic fenders and plastic under it. It's mainly an issue with spindle. You just have to get a proper offset and spacer if needed
Kind of makes you wonder, doesn't it???





Maybe they meant a BFHG.................big freaking heat gun!!
Old 01-09-2012, 05:37 PM
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Lmao! Must've been. Next he's going to ask if you can roll your front fenders.
Old 01-11-2012, 12:51 PM
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Thanks for the help everyone.

What modifications would have to be made to the knuckle/hub area to make 315s work? Does anyone know the rim offset that would be needed?

How big can a person go up front without modifying the knuckle/hub area? Again, thanks.
Old 01-11-2012, 01:41 PM
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You can run an 11" up front, autocross guys do it all the time. The only modifications usually needed are spacers. It looks terrible most of the time though and they would pull you all over the place on the street.

Trans-Ams seem to accommodate them better than the Camaro (pic's previously posted).

Check this thread out.. http://www.camaroz28.com/forums/whee...4-bird-597727/

If you do it, consider a set of G-PLUS arms; they have additional caster built into the them that keep the tire flatter on the pavement.
Old 01-11-2012, 03:01 PM
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I'm sorry I'm a drag racer don't do much cornering unless I'm driving my v6 bird which I built as more of a handling car why would you wanna run more than a 275 from tire I'm sure you could get more grip with a wider tire but jeezbus that would look odd and how would the car track with that wide of a tire I had 15x10 rims on my blazer xtreme and it was so hard to turn killed gas mileage and just made the truck way more susceptible to hydroplaing
Old 01-12-2012, 12:24 AM
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I'm running 18x10s with a 51mm offset, and 285/35R18 tires. I've tested this setup at full suspension travel with the wheels turned lock to lock and no rubs or touches anywhere.

Mark.
Old 01-12-2012, 10:48 AM
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I ran 17x10 in the front for awhile without spacers, and the only issue I had was having to cut off a casting protrusion on the cast iron spindle arm because it would knock my wheel weights off
Old 01-12-2012, 11:04 AM
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Might wanna invest in replacement hub bearings while you're at it. Having that much meat up front along with the load forces in cornering will wear it out a lot quicker on the track/auto-x than you'd expect. There have been a few threads about it on FRRAX.
Old 01-12-2012, 07:52 PM
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There is no BFH mod in the front.
What you need to do is grind off the cast nub that sticks out of the spindle.

It's by the 12 o'clock position on the spindles
Old 01-12-2012, 11:03 PM
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Originally Posted by 69TA
What you need to do is grind off the cast nub that sticks out of the spindle.
Something to keep in mind before making a permanent change like this is larger diameter wheels provide more clearance for things like this. Going wider with 16" or 17" wheels means clearing things like the spindle, a-arm, etc can become an issue. Whereas going wider with a larger diameter wheel can possibly eliminate that issue. However you then start running a higher risk of the tire tread and/or sidewall having clearance issues with the inside of the fender or the lip. Going with a lower profile tire can help with this.

I went as large as I felt comfortable with being that I only had online research to go by.

Hope this helps.

Mark.
Old 01-12-2012, 11:38 PM
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Ideally 10" up and 11" out back with 315's all around would be the best setup. After clearance issues are addressed it come down to the wheel bearing. I am sure that the bearings can take the load. I could though see the bearings failing from heat. Now would brake cooling be a permanent fix, it would cool the brakes and the wheel bearing??
Old 01-13-2012, 12:15 AM
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I don't think it's the heat that kills wheel bearings. It's the stress of auto-xing and road racing with wider/heavy wheels that does it. The wheel bearings just aren't strong enough.
Old 01-13-2012, 01:01 PM
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There is actually more room in the front that

in the rear of our cars to fit wider tires.
Old 01-14-2012, 07:34 PM
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i run 18x10.5 with 295 and have no issues
Old 01-14-2012, 07:46 PM
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I don't understand what you would be using a hammer on in the front of the car...lol. Plastic fenders and plastic under it. It's mainly an issue with spindle. You just have to get a proper offset and spacer if needed
I was going to say the same thing..Nothing to use a BFH too in the front haha.



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