Do they stay in place while driving on and off on a cement garage floor?

No, they did not stay in place for me and my car - GT500. The ramp part is too high. For me, driving on/into them, I was able to finally get into them. But backing out of them was a complete failure. The rear lip is too high. I actually spun the rear tires trying to back out of them. The front tires would not roll out over the rear lip - too high. They slid along the garage floor. As the rear tires spun, the rear kicked out and slammed into the fronts. Simply a very bad design. "FLATSTOPPERS" from Race Ramps - the ramp is not as steep and the rear lip is not as high. They cost s little more, but they work!! Hope my answer helps.

maximum tire diameter? 20 inch?

Without measuring, I'd say at least 20" and a little wiggle room. Mine have last 3 years + without any issues and best of all. No flat spots on the tires. A great product.

what's the largest tire this will fit? I have 35x12.5r15 tires on my jeep.

It is 14 1/2 inchs wide. How wide is the tire?

Could I park a C6 corvette on these?

I bought these to fit under my 2007 SL550 Mercedes convertible(RWD) and they slipped out , actually shot out every time I tried to roll onto it. They are hard and slick. You may need to have a rough non skid floor or apply tape under. Yes I think your corvette would fit. I may consider a different brand.

MAXSA Innovations 37353-BK PARK RIGHT Flat Free Tire Ramp, (Set of 4)

MAXSA Innovations 37353-BK PARK RIGHT Flat Free Tire Ramp, (Set of 4)

Product ID: 298183396

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Details

Brand
MAXSA
Material
Colour
Black
Item Weight
22.8 Pounds
Is Foldable
No

🚗Universal fit for all vehicle types

🛞5 tons load capacity

🛠️Heavy-duty polypropylene build

Description

🛞 Keep your ride flawless—park smart, stay ahead!

TRUSTED QUALITY - Made in the USA with a solid 4.2-star rating from 473 users
EFFORTLESS SETUP - Simply position and drive forward—no tools or hassle required
HEAVY DUTY STRENGTH - Each ramp supports up to 5 tons, built to last for years
UNIVERSAL COMPATIBILITY - Perfect for cars, trucks, SUVs, RVs, trailers, and campers
ULTIMATE TIRE PROTECTION - Prevents flat spots and wheel damage during long-term storage

The MAXSA Innovations 37353-BK Park Right Flat Free Tire Ramp set includes four heavy-duty polypropylene ramps, each supporting up to 5 tons. Designed to prevent tire deformation during extended storage, these universal-fit ramps are compatible with a wide range of vehicles including cars, trucks, SUVs, RVs, trailers, and campers. Easy to use and built in the USA, they offer durable, long-term tire protection backed by strong customer satisfaction.

Specifications

ASIN	B00U7HMZZO
Brand	MAXSA
Colour	Black
Country of Origin	USA
Customer Reviews	4.2 out of 5 stars 473 Reviews
Enclosure Material	other-materials
Global Trade Identification Number	00857170005027
Included Components	PRODUCT
Is Foldable	No
Item Type Name	Parking Garage Device & Accessories
Item Weight	10.34 kg
Load Capacity	5 tons
Manufacturer	MAXSA Innovations
Manufacturer Part Number	37353
Manufacturer Warranty Description	MAXSA Innovations, LLC warrants to the original consumer/purchaser that this product shall be free of defects in material and workmanship under normal use and circumstances for a period of ninety (90) days from the date of original purchase for use. When the original consumer/purchaser returns the product pre-paid (consumer pays return shipping) to MAXSA Innovations, LLC, 8412 Cathedral Forest Dr;…
Material	other-materials
Model number	37353
UPC	857170005027

Reviews

I**6

Sturdy and wide Tire Ramp

11.12.2020

S**M

Works perfectly.

22.02.2023

R**R

Simple to use.

24.01.2024

M**T

Must have for storage

15.03.2026

B**N

Very good quality

14.10.2022

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