rca blocks on 20" please help - Club Lexus Forums


rca blocks on 20" please help

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Old 04-10-15, 07:48 PM   #1
GS4TEK
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Default rca blocks on 20" please help

i ordered my 20"wheels and tires will be overspec 245 35 20 im thinking about rca blocks on the front but not sure 20, 25, 30mm will fit, any members running the same setup with or without any rubbing ect... please chime in.
i will install the 17" oem wheels for the winter
thanks

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Old 04-12-15, 05:08 AM   #2
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i ordered my 20"wheels and tires will be overspec 245 35 20 im thinking about rca blocks on the front but not sure 20, 25, 30mm will fit, any members running the same setup with or without any rubbing ect... please chime in.
i will install the 17" oem wheels for the winter
thanks
I'm running 20mm on my AWD and they fit just fine with my stock 17" wheels.
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Old 04-12-15, 10:22 PM   #3
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I'm running 20mm on my AWD and they fit just fine with my stock 17" wheels.
how long has. have the blocks and how is the ride on rca blocks so far?
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Old 04-13-15, 04:03 AM   #4
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how long has. have the blocks and how is the ride on rca blocks so far?
I've had them on the car for about 3 weeks now and they have not changed the ride at all because they don't change the suspension itself. They just reposition the ride height.
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Old 04-13-15, 02:06 PM   #5
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I've had them on the car for about 3 weeks now and they have not changed the ride at all because they don't change the suspension itself. They just reposition the ride height.
Thank u
I got the same feed back from other members that are on rca blocks
so I may do the blocks as well.
the 30mm will get less arch gap then 20mm am I right on this?
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Old 04-13-15, 04:11 PM   #6
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Thank u
I got the same feed back from other members that are on rca blocks
so I may do the blocks as well.
the 30mm will get less arch gap then 20mm am I right on this?
You would be correct about 30mm having less gap than 20mm. However, if you have an AWD and you want to run 17" wheels you are limited to 20mm. The general report is that if you have RWD then you are limited to 25mm with 17" wheels.

In order to use 30mm blocks you would need to go to 18" wheels full time.
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Old 04-13-15, 11:30 PM   #7
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[QUOTE=RTGS350;8998511]You would be correct about 30mm having less gap than 20mm. However, if you have an AWD and you want to run 17" wheels you are limited to 20mm. The general report is that if you have RWD then you are limited to 25mm with 17" wheels.

In order to use 30mm blocks you would need to go to 18" wheels full time.[/QUOTE11

thanks for this useful info.
i just ordered a set of 20" wheels and those will be on my car really soon and may do 20mm blocks if that won't be an issue
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Old 04-14-15, 04:16 AM   #8
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[QUOTE=GS4TEK;8999188]
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Originally Posted by RTGS350 View Post
You would be correct about 30mm having less gap than 20mm. However, if you have an AWD and you want to run 17" wheels you are limited to 20mm. The general report is that if you have RWD then you are limited to 25mm with 17" wheels.

In order to use 30mm blocks you would need to go to 18" wheels full time.[/QUOTE11

thanks for this useful info.
i just ordered a set of 20" wheels and those will be on my car really soon and may do 20mm blocks if that won't be an issue
That sounds like it would work just fine. If you never plan to go back to 17" wheels and keep the 20" wheels on for good then you can use 30mm blocks with no issue at all.
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Old 04-17-15, 07:19 AM   #9
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Does anyone know if any of these would work with the spare tire???? I was just thinking, what if I get a flat. Lol
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Old 05-17-15, 01:37 PM   #10
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Does anyone know if any of these would work with the spare tire???? I was just thinking, what if I get a flat. Lol
I would guess so since the spare tire does clear the calipers so it should clear the extended bolts from the 20mm RCA blocks.
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Old 05-18-15, 02:21 PM   #11
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I run 20's with a 20mm rca, currently my tires do rub. My old tires did not, it all matters on the tires. If you run square edged tires you will rub. You will need to do fender liner trimming, and maybe pinch weld grinding
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