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.

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MAXSA 37353 ParkRight Prevent Flat Spots Tire Saver Storage Ramps Black 4PK

MAXSA 37353 ParkRight Prevent Flat Spots Tire Saver Storage Ramps Black 4PK

Product ID: 19303540

Details

Brand
Maxsa
Color
Black
Item Weight
22.8 pounds
Material
Polypropylene
Product Dimensions
21.5"L x x

📏20% longer & 2x wider than standard ramps

🛞Supports up to 10 tons per ramp

🛡️Heavy-duty polypropylene with anti-slip feet

1805.73 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛞 Keep your ride flawless—because flat spots are so last season!

BUILT TO LAST - Heavy-duty polypropylene ramps with cross-ribbed strength support massive loads
EFFORTLESS SETUP - Simple reverse and roll-on installation—no tools, no hassle
FLAT SPOT FIGHTER - Curved design keeps tires perfectly round during long-term storage
STAY PUT STABILITY - Non-slip rubber feet ensure ramps stay firmly in place on any surface
UNIVERSAL FIT UNIVERSAL PROTECTION - Extra-large dimensions fit nearly all tire and wheel types with ease

The MAXSA 37353 ParkRight Tire Saver Ramps are a premium set of four heavy-duty polypropylene ramps designed to prevent flat spots on tires during extended vehicle storage. Measuring 21.5" x 14.2" and supporting up to 10 tons each, their curved, anti-slip design ensures universal fit and maximum durability for all tire types, making them essential for show cars, classics, RVs, and seasonal vehicles.

Specifications

ASIN	B00U7HMZZO
Best Sellers Rank	#144,367 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #166 in Material Handling Ramps
Brand Name	Maxsa Innovations
Color	Black
Customer Reviews	4.3 4.3 out of 5 stars (481)
Global Trade Identification Number	00857170005027
Included Components	Park Right Flat-free Tire Ramps, 4 Pk
Item Dimensions L x W x H	21.5"L x 14.2"W x 3.38"H
Item Type Name	Park Right Tire Saver Ramps for Flat Spot Prevention and Vehicle Storage (Set of 4), Black (37353-BK)
Item Weight	22.8 pounds
Load Capacity	5 tons
Manufacturer	Maxsa
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 Type	Polypropylene (PP)
Model Number	37353
UPC	857170005027

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1805.73 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Smooth transaction and product arrived in perfect condition.

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