245/40/17
245/45/17
Enforcer
Got new wheels and still can't decide on the tire size. I am running on stock springs with koni yellows, no spacers. Wheels are 17x8.5 Arc-8.
Has anyone used a 245/45/17 square setup before?
Added poll, but I reserve to the right to go against the grain.
Capo
Nope, this here's a democracy, and you'll do as the majority pleases. Also I have no skin in the game but I would lean toward 245/40/17 since it is only about -1.5% small diameter front and back compared to stock vs 2.5%+ larger in a 245/45/17 tire.Originally Posted by Go Horns!
Capo
245/40-17 is the correct profile for that setup. 45 is a taller profile and I believe it's considered an odd size. In addition, it's taller, and could potentially have fitment issues.
BP
2005 330i ZHP / 6MT
Imolarot / Naturbraun
2003 330iT / 6MT
Orientblau / Naturbraun
It's not the car you drive, it's how you drive it.
Capo di tutti capi
I'm a 245/45/18 guy.
Sent from my SM-G925V using Tapatalk
Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim
Capo
I'm running 235/40 on my square style 135s.
Thumbs, iPhone, TaT.
Campieri
don't you mean 245/40/18? (your sig does not lie?) 245/45/18 would be HUGE...
peter
peter
2004 330i ZHP
2005 330iT ZHP
2010 328iT M Sport
Capo
I went through this exactly same dilemma when I was last shopping for tires. The 245/45-18's were much cheaper, but... they are bigger and aren't the correct size (I would have had fitment issues since my car's low). It's the same deal with 17's; 245/40's are the correct size, even though I believe the 45's are cheaper, but they're a taller profile so it doesn't look right on the car (a LOT of tire) and throws the speed readings off quite a bit and the car is slower to accelerate slightly, though this is barely measurable.
BP
2005 330i ZHP / 6MT
Imolarot / Naturbraun
2003 330iT / 6MT
Orientblau / Naturbraun
It's not the car you drive, it's how you drive it.
Campieri
yeah, BP, but 245/45/18 is way too huge. even 245/40/18 that dane runs is quite a bit larger in diameter.
i ran OE M3 Contis for a bit (225/45/18 and 255/40/18) and while not hugely wide, they were 1" taller than stock in the rear and 0.9" taller than stock in the front. that also means you're raising your car 0.5" off the ground too.
peter
peter
2004 330i ZHP
2005 330iT ZHP
2010 328iT M Sport
Capo di tutti capi
Lol...don't you mean 245/40/18? (your sig does not lie?
peter
Probably.
Sent from my SM-G925V using Tapatalk
Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim
Capo
yeah, BP, but 245/45/18 is way too huge. even 245/40/18 that dane runs is quite a bit larger in diameter.
i ran OE M3 Contis for a bit (225/45/18 and 255/40/18) and while not hugely wide, they were 1" taller than stock in the rear and 0.9" taller than stock in the front. that also means you're raising your car 0.5" off the ground too.
peter
Sorry, I meant 245/40. Even the 245/40 is HUGE to me.
BP
2005 330i ZHP / 6MT
Imolarot / Naturbraun
2003 330iT / 6MT
Orientblau / Naturbraun
It's not the car you drive, it's how you drive it.
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