My RCF with 305/35/19 on stock wheels & lowered. NO rubbing! Proof in thread!
#1
Driver School Candidate
Thread Starter
My RCF with 305/35/19 on stock wheels & lowered. NO rubbing! Proof in thread!
Long time lurker, but I decided to join. Mostly because I figured this discovery needs to be known. I've read countless "Widest tire on stock wheels?" threads and all the posts of how a 305 "might fit" on a stock rear wheel. I read one thread about how it was confirmed by three different shops that a 305/35/19 on the stock wheels will definitely rub. Is there an abundance of RCF owners all buying 305/35 wide tires for the stock wheels? Probably not.
Well it looked to me like it would fit. I got it on a rack and took a ton of measurements before I actually bought these. Every possible angle that I measured showed that 305/35/19 in the rear SHOULD fit. Low and behold, my measurements were correct. Im lowered on Swift springs and currently running a 275/35/19 up front and a 305/35/19 in the rear on the stock wheels with with zero rubbing on the 305's, and I have TRIED to make them rub. From hard high speed corning to coming into the driveway a bit to fast lol. I just got back and had about 100lbs worth of stuff in the trunk, even some dips on the freeway, still, no rub. I can get the 275 to BARLEY rub, so minimal its not even worth fixing, though an alignment should remedy this. It rubs the rear portion of the fender liner but only under extreme braking. I'm talking only when to the floor braking and getting a full negative 1.0g. I have not got an alignment yet since lowered, but if I increase the positive caster just a little I am very confident that it should solve the issue. Some of you probably ask, why run a 35 series tire and risk it? Well I really love the Nitto NT-05 tire and the only size in a 19 that is a 305 is a 305/35. With a different set of wheels and the correct offset I don't see why someone couldn't fit a 325/30/19 and a 285/30 up front. It would be close, but I think there is enough room from the measurements I've taken. On a side note the only other things I have done is a 1" spacer between the axleback and midpipe (lets that 5 liter sing!) and I have chopped the secondary cats out (no I won't throw a check engine light, its the secondaries). I left the stock resonators so nothing but deep grumble, no raspy at all. Anyways, back on topic;
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Well it looked to me like it would fit. I got it on a rack and took a ton of measurements before I actually bought these. Every possible angle that I measured showed that 305/35/19 in the rear SHOULD fit. Low and behold, my measurements were correct. Im lowered on Swift springs and currently running a 275/35/19 up front and a 305/35/19 in the rear on the stock wheels with with zero rubbing on the 305's, and I have TRIED to make them rub. From hard high speed corning to coming into the driveway a bit to fast lol. I just got back and had about 100lbs worth of stuff in the trunk, even some dips on the freeway, still, no rub. I can get the 275 to BARLEY rub, so minimal its not even worth fixing, though an alignment should remedy this. It rubs the rear portion of the fender liner but only under extreme braking. I'm talking only when to the floor braking and getting a full negative 1.0g. I have not got an alignment yet since lowered, but if I increase the positive caster just a little I am very confident that it should solve the issue. Some of you probably ask, why run a 35 series tire and risk it? Well I really love the Nitto NT-05 tire and the only size in a 19 that is a 305 is a 305/35. With a different set of wheels and the correct offset I don't see why someone couldn't fit a 325/30/19 and a 285/30 up front. It would be close, but I think there is enough room from the measurements I've taken. On a side note the only other things I have done is a 1" spacer between the axleback and midpipe (lets that 5 liter sing!) and I have chopped the secondary cats out (no I won't throw a check engine light, its the secondaries). I left the stock resonators so nothing but deep grumble, no raspy at all. Anyways, back on topic;
free upload
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#2
AWESOME, & Thanks for posting it cause I've also heard/read so many guys saying they WON'T Fit without rubbing! NOW I know, looks Great & WELCOME to the forum/club. Though, it'll still be interesting to see IF you have a few that will still come on here & say it's NOT a good idea to do it!
#4
Lexus Champion
iTrader: (9)
Yes, a 305/35/19 will fit a 10" wheel and a 275/35/19 will fit a 9" wheel per tire manufacturer's recommendations. The problem arises when you put a 30 series tire with those dimensions on stock RCF wheels.
Your wheel diameter is close to 1" more than stock, so your sitting close to ½" higher off the ground. Your speedometer is off. Don't know what affect this will have on the cars electrics
Lou
Your wheel diameter is close to 1" more than stock, so your sitting close to ½" higher off the ground. Your speedometer is off. Don't know what affect this will have on the cars electrics
Lou
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krill (11-26-21)
#5
Driver School Candidate
Thread Starter
Yes, a 305/35/19 will fit a 10" wheel and a 275/35/19 will fit a 9" wheel per tire manufacturer's recommendations. The problem arises when you put a 30 series tire with those dimensions on stock RCF wheels.
Your wheel diameter is close to 1" more than stock, so your sitting close to ½" higher off the ground. Your speedometer is off. Don't know what affect this will have on the cars electrics
Lou
Your wheel diameter is close to 1" more than stock, so your sitting close to ½" higher off the ground. Your speedometer is off. Don't know what affect this will have on the cars electrics
Lou
No lights, no anything. Car drives just as it stock....but with more traction . Stock the tires are 2.3% difference in size (255/35 & 275/35), now I'm at 3% difference (275/35 & 305/35). only .7% more. The 305/35 at "60 mph" is now 61.8mph. and the 275 up front at "60mph" is now 61.4mph. The difference is pretty negligible. At 1mph difference its not going to matter.
Concering height;
Front height has been raised by .3". Rear height has been raised by .4". With the swift springs I'm still quite lower then stock and I actually can enter my driveway not having to angle the car now, so thats nice lol.
#6
Pit Crew
iTrader: (2)
Yes, a 305/35/19 will fit a 10" wheel and a 275/35/19 will fit a 9" wheel per tire manufacturer's recommendations. The problem arises when you put a 30 series tire with those dimensions on stock RCF wheels.
Your wheel diameter is close to 1" more than stock, so your sitting close to ½" higher off the ground. Your speedometer is off. Don't know what affect this will have on the cars electrics
Lou
Your wheel diameter is close to 1" more than stock, so your sitting close to ½" higher off the ground. Your speedometer is off. Don't know what affect this will have on the cars electrics
Lou
#7
Pole Position
Is the RCF electronic nanny monitoring all four tires and compare left to right sides at the same time PLUS another sensor monitoring the angle and rate of velocity changes? So the system knows and automatically compensate for any changes?
No lights, no anything. Car drives just as it stock....but with more traction . Stock the tires are 2.3% difference in size (255/35 & 275/35), now I'm at 3% difference (275/35 & 305/35). only .7% more. The 305/35 at "60 mph" is now 61.8mph. and the 275 up front at "60mph" is now 61.4mph. The difference is pretty negligible. At 1mph difference its not going to matter.
Concering height;
Front height has been raised by .3". Rear height has been raised by .4". With the swift springs I'm still quite lower then stock and I actually can enter my driveway not having to angle the car now, so thats nice lol.
Concering height;
Front height has been raised by .3". Rear height has been raised by .4". With the swift springs I'm still quite lower then stock and I actually can enter my driveway not having to angle the car now, so thats nice lol.
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#8
Lead Lap
No lights, no anything. Car drives just as it stock....but with more traction . Stock the tires are 2.3% difference in size (255/35 & 275/35), now I'm at 3% difference (275/35 & 305/35). only .7% more. The 305/35 at "60 mph" is now 61.8mph. and the 275 up front at "60mph" is now 61.4mph. The difference is pretty negligible. At 1mph difference its not going to matter.
Concering height;
Front height has been raised by .3". Rear height has been raised by .4". With the swift springs I'm still quite lower then stock and I actually can enter my driveway not having to angle the car now, so thats nice lol.
Concering height;
Front height has been raised by .3". Rear height has been raised by .4". With the swift springs I'm still quite lower then stock and I actually can enter my driveway not having to angle the car now, so thats nice lol.
I'm just sayin'... Maybe it's still within the needed tolerances, maybe not. I'm not the engineer who designed the system and I doubt Lexus will aid you in modifying their car.
#9
Nice, meaty tires!
-Josh
-Josh
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Your #1 Dealer for Aftermarket Performance Products
Orange County, CA
Email: info@merakiautoworks.com
Text/Call: 213 394 2886
Website: www.MerakiAutoworks.com