Fitment help

whip_lash · 06-14-2021, 08:56 AM

Hey guys, just received some BC forged rims and my rears are 19x11 ET35. Fronts 19x9.5 ET20

I'm getting a deal through a friend on some Continental ExtremeContact sports and wondering if a 305/30/19 will work in the rear with no rubbing? (stock now but planning on lowering with Macht Schnell Springs). Or do I need to go with a 295? I have seen pictures with a 305 on ET35 11" rim but not so far with these specific tires and want to be 100% sure before I purchase them.

I'm going with 265/35/19 in front.

Thanks for any help!

E92inSG · 06-14-2021, 10:40 AM

I’m on 19x11 ET37 rear.

305/30r19 PS4S rubbed pretty badly for me at anything close to stock alignment. Car is lowered on coilovers.

Switched up to 295/30r19 PS4S also and it’s much better which rubbing on under the worst conditions (fully loaded and big freeway dips)

whip_lash · 06-16-2021, 08:25 AM

Quote:

Originally Posted by E92inSG

I’m on 19x11 ET37 rear.

305/30r19 PS4S rubbed pretty badly for me at anything close to stock alignment. Car is lowered on coilovers.

Switched up to 295/30r19 PS4S also and it’s much better which rubbing on under the worst conditions (fully loaded and big freeway dips)

Thanks for the feedback, what are you running for the fronts?

E92inSG · 06-16-2021, 10:25 AM

Quote:

Originally Posted by whip_lash

Thanks for the feedback, what are you running for the fronts?

19x9.5 ET23 with 5mm spacer
265/35r19

minor rubbing on front fender liner at high steering angles.

ntg44 · 06-16-2021, 10:32 AM

ECS is a really fat tire. Do not recommend 305 on that offset. 295 is safer, but still right at the edge.

hC1001 · 06-16-2021, 12:20 PM

I have 19x11 ET37s. I just went from 295/30/19 P4S to 305/30/19 P4S. Im lowered on coilovers. The 305s rub on the rear plastic inner fender liner very easily. The 295s rubbed on the fender liners under really extreme conditions but i couldnt hear it rub. I only know because you can feel the scuff in the plastic liner from the tire. I do hear the 305s rub often now.

Gonna try adding a little more camber and molding the fender liner to stop the rub. Kinda wish i stayed with the 295s now...

x.shell · 06-17-2021, 12:09 AM

Quote:

Originally Posted by whip_lash

Hey guys, just received some BC forged rims and my rears are 19x11 ET35. Fronts 19x9.5 ET20

I'm getting a deal through a friend on some Continental ExtremeContact sports and wondering if a 305/30/19 will work in the rear with no rubbing? (stock now but planning on lowering with Macht Schnell Springs). Or do I need to go with a 295? I have seen pictures with a 305 on ET35 11" rim but not so far with these specific tires and want to be 100% sure before I purchase them.

I'm going with 265/35/19 in front.

Thanks for any help!

You should be fine if you run some camber.

The Conti ECS is 305/30/19 NOT as wide as other brands of tire. It is more equivalent to 295s from other brands.

I ran the 305/30/19 ECS on my Advan GTs. It was a 19x10.5 +35 with a 5mm spacer. This makes it a 10.5 +30. Your set up will only be 1mm more aggressive on the outside. But the fact that you have an 11" wide wheel will give the tire more stretch, thus more clearance.

If there is any rubbing, it can be easily remedied.

Here is my car with the Advans: 19x10.5 +30 on 305/30/19 Conti ECS.

E92inSG · 06-17-2021, 12:27 AM

i think it's important to note what everyone is running rear camber. if you dont mind running 2.5* and above, you will definitely get more clearance. but drop in straight line traction

whip_lash · 06-17-2021, 10:14 AM

Thanks so much for all of the replies! I think I will go with a 295/30 as I really don't want to be dealing with rubbing and cambering.

I'm thinking to go with a 265/30 up front or 275/30? I want the look to match so I think the 265/30 will work better?

x.shell · 06-17-2021, 03:07 PM

Quote:

Originally Posted by whip_lash

Thanks so much for all of the replies! I think I will go with a 295/30 as I really don't want to be dealing with rubbing and cambering.

I'm thinking to go with a 265/30 up front or 275/30? I want the look to match so I think the 265/30 will work better?

It's a tough call. The 265/30 will be tiny diameter wise. The 275/30 will be wide for a 9.5 wheel.

The reason why people run 265/35/19 and 305/30/19 on 19x9.5 and 19x11 wheels is because they are the same diameter, but fit well in terms of width. It's up to you.

rborane · 06-17-2021, 03:08 PM

Quote:

Originally Posted by x.shell

Quote:

Originally Posted by whip_lash

Thanks so much for all of the replies! I think I will go with a 295/30 as I really don't want to be dealing with rubbing and cambering.

I'm thinking to go with a 265/30 up front or 275/30? I want the look to match so I think the 265/30 will work better?

It's a tough call. The 265/30 will be tiny diameter wise. The 275/30 will be wide for a 9.5 wheel.

The reason why people run 265/35/19 and 305/30/19 on 19x9.5 and 19x11 wheels is because they are the same diameter, but fit well in terms of width. It's up to you.

275/30 works really well on a 9.5.

Tread width on a 275/30 PS4S is 9.7". 265/35 is 9.6".

stevehifi · 06-17-2021, 07:46 PM

running 305/30/19 RE71R on BBS LM 19x11 ET37 with no issues.

Camber is -2.

Agree with the crowd that it really depends on the tire brand.

ET35 is starting to push the envelope, I think ET40-44 is a better offset for 305 and higher width tires.

06-14-2021, 08:56 AM	#1
whip_lash Lieutenant 16 Rep 446 Posts Drives: '15 M3 Join Date: Mar 2011 Location: Toronto iTrader: (3)	Fitment help - 11" ET35 rim Hey guys, just received some BC forged rims and my rears are 19x11 ET35. Fronts 19x9.5 ET20 I'm getting a deal through a friend on some Continental ExtremeContact sports and wondering if a 305/30/19 will work in the rear with no rubbing? (stock now but planning on lowering with Macht Schnell Springs). Or do I need to go with a 295? I have seen pictures with a 305 on ET35 11" rim but not so far with these specific tires and want to be 100% sure before I purchase them. I'm going with 265/35/19 in front. Thanks for any help!
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06-14-2021, 10:40 AM	#2
E92inSG Captain 553 Rep 815 Posts Drives: F80 M3 Join Date: Jul 2012 Location: Asia iTrader: (1)	I’m on 19x11 ET37 rear. 305/30r19 PS4S rubbed pretty badly for me at anything close to stock alignment. Car is lowered on coilovers. Switched up to 295/30r19 PS4S also and it’s much better which rubbing on under the worst conditions (fully loaded and big freeway dips)
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06-16-2021, 10:32 AM	#5
ntg44 Colonel 2889 Rep 2,147 Posts Drives: R8 4.2 Spyder Join Date: Aug 2018 Location: Chicago iTrader: (3)	ECS is a really fat tire. Do not recommend 305 on that offset. 295 is safer, but still right at the edge. __________________ YT: ntg44
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06-16-2021, 12:20 PM	#6
hC1001 Captain 591 Rep 986 Posts Drives: E36 M3, F80 M3 Join Date: Nov 2019 Location: Brooklyn, NY iTrader: (4)	I have 19x11 ET37s. I just went from 295/30/19 P4S to 305/30/19 P4S. Im lowered on coilovers. The 305s rub on the rear plastic inner fender liner very easily. The 295s rubbed on the fender liners under really extreme conditions but i couldnt hear it rub. I only know because you can feel the scuff in the plastic liner from the tire. I do hear the 305s rub often now. Gonna try adding a little more camber and molding the fender liner to stop the rub. Kinda wish i stayed with the 295s now...
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06-17-2021, 12:27 AM	#8
E92inSG Captain 553 Rep 815 Posts Drives: F80 M3 Join Date: Jul 2012 Location: Asia iTrader: (1)	i think it's important to note what everyone is running rear camber. if you dont mind running 2.5* and above, you will definitely get more clearance. but drop in straight line traction __________________ IG @f80_guy
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06-17-2021, 10:14 AM	#9
whip_lash Lieutenant 16 Rep 446 Posts Drives: '15 M3 Join Date: Mar 2011 Location: Toronto iTrader: (3)	Thanks so much for all of the replies! I think I will go with a 295/30 as I really don't want to be dealing with rubbing and cambering. I'm thinking to go with a 265/30 up front or 275/30? I want the look to match so I think the 265/30 will work better?
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06-17-2021, 07:46 PM	#12
stevehifi Captain 527 Rep 855 Posts Drives: 17 F80 M3 ZCP Join Date: May 2008 Location: Irvine,CA iTrader: (5)	running 305/30/19 RE71R on BBS LM 19x11 ET37 with no issues. Camber is -2. Agree with the crowd that it really depends on the tire brand. ET35 is starting to push the envelope, I think ET40-44 is a better offset for 305 and higher width tires.
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