R888Rs + Single Turbo WTQ

CrimsonN54_6MT · 09-26-2021, 09:51 AM

Just mounted OEM 351s (8.5 Front, 9 Rear) on my E92. They came with brand new Toyo Proxes 4s (245 35R 19, 275 30R 19). Based on my limited knowledge of wheels & tires, I'm 95% sure these won't hook the +-700whp that my to-be installed ST kit + LSD will produce. Mainly rolls, no launching.

Is my assumption correct, or would my current setup be enough for roll racing?
If my current tires warrant a bump to R888rs, would there be a worthwhile benefit to 275 35 vs 30 in the rear?
When folks say "R888rs" aren't great in rain, what does that actually mean? Normal commuter driving like the average non-enthusiast in rain = hydroplaning and realistically unsafe to drive? Or fine in rain, long as you're not sharply accelerating, WOT, and/or cornering aggressively?

Thanks in advance!

flipmode · 10-12-2021, 06:32 AM

definitely switch to R888R. You will have to go with 275/35/19 as I think they don't make a 275/30/19 tire. As long as your driving normal, its not bad in the rain. Mind you if this is your daily driver, these tires are loud.

rev210 · 10-17-2021, 09:49 PM

R888R's can hydroplane at pretty lowish speeds, so drive like grandpa in the rain and watch out for large puddles.

The Kumho V70As are probably king of the true R-comp for all round driving . The medium conpound is maybe a bit softer than R888R so similar traction and like R888R they warm quickly but, unlike basically all of the 'summer' tyres they work great in water. Not sure if you can get these easily where you are though?
Pretty sure they are treadwear 50. So I treat them as a yearly consumable for the rears on a daily driver that runs 10.7@131mph. They are magic on the front too.

09-26-2021, 09:51 AM	#1
CrimsonN54_6MT New Member -2 Rep 9 Posts Drives: BMW 335i N54 Join Date: Aug 2021 Location: Dallas Texas iTrader: (0)	R888Rs + Single Turbo WTQ Just mounted OEM 351s (8.5 Front, 9 Rear) on my E92. They came with brand new Toyo Proxes 4s (245 35R 19, 275 30R 19). Based on my limited knowledge of wheels & tires, I'm 95% sure these won't hook the +-700whp that my to-be installed ST kit + LSD will produce. Mainly rolls, no launching. Is my assumption correct, or would my current setup be enough for roll racing? If my current tires warrant a bump to R888rs, would there be a worthwhile benefit to 275 35 vs 30 in the rear? When folks say "R888rs" aren't great in rain, what does that actually mean? Normal commuter driving like the average non-enthusiast in rain = hydroplaning and realistically unsafe to drive? Or fine in rain, long as you're not sharply accelerating, WOT, and/or cornering aggressively? Thanks in advance!
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10-12-2021, 06:32 AM	#2
flipmode Private First Class 63 Rep 124 Posts Drives: 2009 BMW 335i Join Date: Jan 2018 Location: Ontario iTrader: (0)	definitely switch to R888R. You will have to go with 275/35/19 as I think they don't make a 275/30/19 tire. As long as your driving normal, its not bad in the rain. Mind you if this is your daily driver, these tires are loud. __________________ MHD Custom Map by DocVu Tuning \| Rod Sutphin Trans flash \| VRSF 7.5 Race FMIC \| BMS Chargepipe \| VRSF DP \| RB Stage Ones \| RB INLETS \| Fuel it stage 2 lpfp
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10-17-2021, 09:49 PM	#3
rev210 Private 49 Rep 88 Posts Drives: 335i 2008 Join Date: Oct 2018 Location: Perth iTrader: (0)	R888R's can hydroplane at pretty lowish speeds, so drive like grandpa in the rain and watch out for large puddles. The Kumho V70As are probably king of the true R-comp for all round driving . The medium conpound is maybe a bit softer than R888R so similar traction and like R888R they warm quickly but, unlike basically all of the 'summer' tyres they work great in water. Not sure if you can get these easily where you are though? Pretty sure they are treadwear 50. So I treat them as a yearly consumable for the rears on a daily driver that runs 10.7@131mph. They are magic on the front too.
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