No grip no fun - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

IsaiahW · 10-22-2021, 04:43 PM

Need tire and wheel knowledge for drag radials. im running 18x9.5+45 on 265/35/18r comp tires(not so good but “decent” grip when heated)im Supercharged and need grip from a standstill current tires are just not cutting it. I would like to only have radials on the rear if possible(wheel prices went up). Whats the best size rim and tire for 400rwhp?

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soundman98 · 10-22-2021, 08:09 PM

i hope you've got a spare transmission

IsaiahW · 10-22-2021, 08:12 PM

370z 1EA0B trans should be able to withstand it right? Im more worried about my axles lol haven’t did anything to them yet

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ka-t_240 · 10-23-2021, 11:32 AM

If you want more rear grip, the issues you are seeing may not only be tire choice. But, tire choice is still important.

If you want more grip from a dig things to do:
1: Evaluate your suspension. Most aftermarket coilovers are a terrible option if you want to drag race. They are too stiff and don't allow weight transfer.
2: Tires - Today's 200tw tires are sticky, but have stiff sidewall, which isn't good for getting out of a dig.
3: Wheels - The larger the wheel, the less sidewall. Less sidewall = less ability for the tire to take some of the shock and "wrinkle" which will put more load back to your axles/diff

cmiovino · 11-02-2021, 06:09 PM

IMO, with that much power and a light chassis, you need something in the 200TW category. Hell, for launching at autocross, my 200TW A052's spin tire with stock power levels - couldn't imagine what a 400whp motor would do.

IsaiahW · 11-02-2021, 06:34 PM

Yah the federal 595rs-pros are 200tw but im slowly realizing i may need to get a different brand they also take a while to heat up

10-22-2021, 04:43 PM	#1
IsaiahW Senior Member Join Date: Mar 2020 Drives: 2013 Subaru brz limited Location: Hampton va Posts: 105 Thanks: 15 Thanked 32 Times in 16 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	No grip no fun Need tire and wheel knowledge for drag radials. im running 18x9.5+45 on 265/35/18r comp tires(not so good but “decent” grip when heated)im Supercharged and need grip from a standstill current tires are just not cutting it. I would like to only have radials on the rear if possible(wheel prices went up). Whats the best size rim and tire for 400rwhp? Sent from my iPhone using Tapatalk

10-22-2021, 08:09 PM	#2
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,673 Times in 6,781 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	i hope you've got a spare transmission __________________ "The time you enjoy wasting is not wasted time"

11-02-2021, 06:09 PM	#5
cmiovino Senior Member Join Date: Aug 2020 Drives: 2017 BRZ PP, 2004 WRX Location: Pittsburgh Posts: 346 Thanks: 16 Thanked 248 Times in 156 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	IMO, with that much power and a light chassis, you need something in the 200TW category. Hell, for launching at autocross, my 200TW A052's spin tire with stock power levels - couldn't imagine what a 400whp motor would do. __________________ 2017 BRZ Limited Performance Pack - Steel Cities Region SCCA / North Hills Sports Car Club

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10-22-2021, 08:12 PM	#3
IsaiahW Senior Member Join Date: Mar 2020 Drives: 2013 Subaru brz limited Location: Hampton va Posts: 105 Thanks: 15 Thanked 32 Times in 16 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	370z 1EA0B trans should be able to withstand it right? Im more worried about my axles lol haven’t did anything to them yet Sent from my iPhone using Tapatalk

10-23-2021, 11:32 AM	#4
ka-t_240 Senior Member Join Date: May 2014 Drives: BRZ Location: Fargo, ND Posts: 968 Thanks: 124 Thanked 327 Times in 236 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	If you want more rear grip, the issues you are seeing may not only be tire choice. But, tire choice is still important. If you want more grip from a dig things to do: 1: Evaluate your suspension. Most aftermarket coilovers are a terrible option if you want to drag race. They are too stiff and don't allow weight transfer. 2: Tires - Today's 200tw tires are sticky, but have stiff sidewall, which isn't good for getting out of a dig. 3: Wheels - The larger the wheel, the less sidewall. Less sidewall = less ability for the tire to take some of the shock and "wrinkle" which will put more load back to your axles/diff

11-02-2021, 06:34 PM	#6
IsaiahW Senior Member Join Date: Mar 2020 Drives: 2013 Subaru brz limited Location: Hampton va Posts: 105 Thanks: 15 Thanked 32 Times in 16 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yah the federal 595rs-pros are 200tw but im slowly realizing i may need to get a different brand they also take a while to heat up

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